diff --git a/.formatter.exs b/.formatter.exs
index ed93f21..fe7b600 100644
--- a/.formatter.exs
+++ b/.formatter.exs
@@ -1,3 +1,5 @@
+# Used by "mix format"
 [
-  import_deps: [:ecto]
+  import_deps: [:ecto],
+  inputs: ["{mix,.formatter}.exs", "{config,lib,test}/**/*.{ex,exs}"]
 ]
diff --git a/.gitignore b/.gitignore
index a0ad33a..6bf5ecb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,14 +1,14 @@
 # The directory Mix will write compiled artifacts to.
-/_build
+/_build/
 
 # If you run "mix test --cover", coverage assets end up here.
-/cover
+/cover/
 
 # The directory Mix downloads your dependencies sources to.
-/deps
+/deps/
 
-# Where 3rd-party dependencies like ExDoc output generated docs.
-/doc
+# Where third-party dependencies like ExDoc output generated docs.
+/doc/
 
 # Ignore .fetch files in case you like to edit your project deps locally.
 /.fetch
@@ -18,4 +18,9 @@ erl_crash.dump
 
 # Also ignore archive artifacts (built via "mix archive.build").
 *.ez
-.elixir_ls
+
+# Ignore package tarball (built via "mix hex.build").
+ecto_ranked-*.tar
+
+# Temporary files, for example, from tests.
+/tmp/
diff --git a/LICENSE b/LICENSE.md
similarity index 98%
rename from LICENSE
rename to LICENSE.md
index c050590..7162005 100644
--- a/LICENSE
+++ b/LICENSE.md
@@ -1,4 +1,4 @@
-MIT License
+# The MIT License
 
 Copyright (c) 2017 Dylan Markow
 
diff --git a/README.md b/README.md
old mode 100755
new mode 100644
index b60034e..a5e121f
--- a/README.md
+++ b/README.md
@@ -1,15 +1,23 @@
 # EctoRanked
 
+[![Module Version](https://img.shields.io/hexpm/v/ecto_ranked.svg)](https://hex.pm/packages/ecto_ranked)
+[![Hex Docs](https://img.shields.io/badge/hex-docs-lightgreen.svg)](https://hexdocs.pm/ecto_ranked/)
+[![Total Download](https://img.shields.io/hexpm/dt/ecto_ranked.svg)](https://hex.pm/packages/ecto_ranked)
+[![License](https://img.shields.io/hexpm/l/ecto_ranked.svg)](https://github.com/dmarkow/ecto_ranked/blob/master/LICENSE.md)
+[![Last Updated](https://img.shields.io/github/last-commit/dmarkow/ecto_ranked.svg)](https://github.com/dmarkow/ecto_ranked/commits/master)
+
 This package adds automatic ranking to your Ecto models. It's heavily based on
 the Rails [ranked-model](https://github.com/mixonic/ranked-model) gem.
 
 ## Installation
 
-The package can be installed by adding `ecto_ranked` to your list of dependencies in `mix.exs`:
+The package can be installed by adding `:ecto_ranked` to your list of dependencies in `mix.exs`:
 
 ```elixir
 def deps do
-  [{:ecto_ranked, "~> 0.4.0"}]
+  [
+    {:ecto_ranked, "~> 0.4.0"}
+  ]
 end
 ```
 
@@ -132,3 +140,10 @@ Documentation can be found at [https://hexdocs.pm/ecto_ranked](https://hexdocs.p
 
 - Everyone who contributed to [ranked-model](https://github.com/mixonic/ranked-model/graphs/contributors), of which this package is a rough clone.
 - [EctoOrdered](https://github.com/zovafit/ecto-ordered), which provided a great starting point.
+
+## Copyright and License
+
+Copyright (c) 2017 Dylan Markow
+
+This work is free. You can redistribute it and/or modify it under the
+terms of the MIT License. See the [LICENSE.md](./LICENSE.md) file for more details.
diff --git a/lib/ecto_ranked.ex b/lib/ecto_ranked.ex
index 7cf0f50..eb8f8d5 100644
--- a/lib/ecto_ranked.ex
+++ b/lib/ecto_ranked.ex
@@ -1,6 +1,6 @@
 defmodule EctoRanked do
   @moduledoc """
-  This module provides support for automatic ranking of your Ecto models.
+  This module provides support for automatic ranking of your `Ecto` models.
   """
   import Ecto.Changeset
   import Ecto.Query
@@ -13,6 +13,7 @@ defmodule EctoRanked do
   the other items in the list as necessary.
 
   ## Options
+
   * `:rank` - the field to store the actual ranking in. Defaults to `:rank`
   * `:position` - the field to use for positional changes. Defaults to `:position`
   * `:scope` - the field(s) to scope all rankings to. Defaults to `nil` (no scoping).
diff --git a/lib/ecto_ranked/utils.ex b/lib/ecto_ranked/utils.ex
index f0b1d1b..9baf957 100644
--- a/lib/ecto_ranked/utils.ex
+++ b/lib/ecto_ranked/utils.ex
@@ -1,10 +1,10 @@
 defmodule EctoRanked.Utils do
   @moduledoc """
-  Provides utilities for EctoRanked
+  Provides utilities for `EctoRanked`.
   """
 
   @doc """
-  Returns the first integer greater or equal than the provided value
+  Returns the first integer greater or equal than the provided value.
 
   ## Examples
 
diff --git a/mix.exs b/mix.exs
index 3c0c29d..1bbc2ab 100644
--- a/mix.exs
+++ b/mix.exs
@@ -1,18 +1,21 @@
 defmodule EctoRanked.Mixfile do
   use Mix.Project
 
+  @source_url "https://github.com/dmarkow/ecto_ranked"
+  @version "0.5.0"
+
   def project do
     [
       app: :ecto_ranked,
-      version: "0.5.0",
+      version: @version,
       elixir: "~> 1.4",
       build_embedded: Mix.env() == :prod,
       start_permanent: Mix.env() == :prod,
       elixirc_paths: elixirc_paths(Mix.env()),
-      docs: [main: "readme", extras: ["README.md"]],
       aliases: aliases(),
       package: package(),
-      deps: deps()
+      deps: deps(),
+      docs: docs()
     ]
   end
 
@@ -22,13 +25,10 @@ defmodule EctoRanked.Mixfile do
       files: ["lib", "mix.exs", "README*"],
       maintainers: ["Dylan Markow"],
       licenses: ["MIT"],
-      links: %{github: "https://github.com/dmarkow/ecto_ranked"}
+      links: %{GitHub: @source_url}
     ]
   end
 
-  # Configuration for the OTP application
-  #
-  # Type "mix help compile.app" for more information
   def application do
     # Specify extra applications you'll use from Erlang/Elixir
     [extra_applications: [:logger]]
@@ -41,20 +41,25 @@ defmodule EctoRanked.Mixfile do
     [test: ["ecto.create --quiet", "ecto.migrate", "test"]]
   end
 
-  # Dependencies can be Hex packages:
-  #
-  #   {:my_dep, "~> 0.3.0"}
-  #
-  # Or git/path repositories:
-  #
-  #   {:my_dep, git: "https://github.com/elixir-lang/my_dep.git", tag: "0.1.0"}
-  #
-  # Type "mix help deps" for more examples and options
   defp deps do
     [
       {:ecto_sql, "~> 3.0"},
       {:postgrex, "~> 0.14", only: :test},
-      {:ex_doc, "~> 0.15", only: :dev, runtime: false}
+      {:ex_doc, ">= 0.0.0", only: :dev, runtime: false}
+    ]
+  end
+
+  defp docs do
+    [
+      extras: [
+        "CODE_OF_CONDUCT.md": [title: "Code of Conduct"],
+        "LICENSE.md": [title: "License"],
+        "README.md": [title: "Overview"]
+      ],
+      main: "readme",
+      source_url: @source_url,
+      source_ref: "v#{@version}",
+      formatters: ["html"]
     ]
   end
 end
diff --git a/mix.lock b/mix.lock
index 33147c0..02431ba 100644
--- a/mix.lock
+++ b/mix.lock
@@ -3,14 +3,14 @@
   "db_connection": {:hex, :db_connection, "2.4.0", "d04b1b73795dae60cead94189f1b8a51cc9e1f911c234cc23074017c43c031e5", [:mix], [{:connection, "~> 1.0", [hex: :connection, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "ad416c21ad9f61b3103d254a71b63696ecadb6a917b36f563921e0de00d7d7c8"},
   "decimal": {:hex, :decimal, "2.0.0", "a78296e617b0f5dd4c6caf57c714431347912ffb1d0842e998e9792b5642d697", [:mix], [], "hexpm", "34666e9c55dea81013e77d9d87370fe6cb6291d1ef32f46a1600230b1d44f577"},
   "earmark": {:hex, :earmark, "1.3.1", "73812f447f7a42358d3ba79283cfa3075a7580a3a2ed457616d6517ac3738cb9", [:mix], [], "hexpm", "000aaeff08919e95e7aea13e4af7b2b9734577b3e6a7c50ee31ee88cab6ec4fb"},
-  "earmark_parser": {:hex, :earmark_parser, "1.4.13", "0c98163e7d04a15feb62000e1a891489feb29f3d10cb57d4f845c405852bbef8", [:mix], [], "hexpm", "d602c26af3a0af43d2f2645613f65841657ad6efc9f0e361c3b6c06b578214ba"},
+  "earmark_parser": {:hex, :earmark_parser, "1.4.17", "6f3c7e94170377ba45241d394389e800fb15adc5de51d0a3cd52ae766aafd63f", [:mix], [], "hexpm", "f93ac89c9feca61c165b264b5837bf82344d13bebc634cd575cb711e2e342023"},
   "ecto": {:hex, :ecto, "3.6.2", "efdf52acfc4ce29249bab5417415bd50abd62db7b0603b8bab0d7b996548c2bc", [:mix], [{:decimal, "~> 1.6 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}, {:telemetry, "~> 0.4", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "efad6dfb04e6f986b8a3047822b0f826d9affe8e4ebdd2aeedbfcb14fd48884e"},
   "ecto_sql": {:hex, :ecto_sql, "3.6.2", "9526b5f691701a5181427634c30655ac33d11e17e4069eff3ae1176c764e0ba3", [:mix], [{:db_connection, "~> 2.2", [hex: :db_connection, repo: "hexpm", optional: false]}, {:ecto, "~> 3.6.2", [hex: :ecto, repo: "hexpm", optional: false]}, {:myxql, "~> 0.4.0 or ~> 0.5.0", [hex: :myxql, repo: "hexpm", optional: true]}, {:postgrex, "~> 0.15.0 or ~> 1.0", [hex: :postgrex, repo: "hexpm", optional: true]}, {:tds, "~> 2.1.1", [hex: :tds, repo: "hexpm", optional: true]}, {:telemetry, "~> 0.4.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "5ec9d7e6f742ea39b63aceaea9ac1d1773d574ea40df5a53ef8afbd9242fdb6b"},
-  "ex_doc": {:hex, :ex_doc, "0.24.2", "e4c26603830c1a2286dae45f4412a4d1980e1e89dc779fcd0181ed1d5a05c8d9", [:mix], [{:earmark_parser, "~> 1.4.0", [hex: :earmark_parser, repo: "hexpm", optional: false]}, {:makeup_elixir, "~> 0.14", [hex: :makeup_elixir, repo: "hexpm", optional: false]}, {:makeup_erlang, "~> 0.1", [hex: :makeup_erlang, repo: "hexpm", optional: false]}], "hexpm", "e134e1d9e821b8d9e4244687fb2ace58d479b67b282de5158333b0d57c6fb7da"},
+  "ex_doc": {:hex, :ex_doc, "0.25.5", "ac3c5425a80b4b7c4dfecdf51fa9c23a44877124dd8ca34ee45ff608b1c6deb9", [:mix], [{:earmark_parser, "~> 1.4.0", [hex: :earmark_parser, repo: "hexpm", optional: false]}, {:makeup_elixir, "~> 0.14", [hex: :makeup_elixir, repo: "hexpm", optional: false]}, {:makeup_erlang, "~> 0.1", [hex: :makeup_erlang, repo: "hexpm", optional: false]}], "hexpm", "688cfa538cdc146bc4291607764a7f1fcfa4cce8009ecd62de03b27197528350"},
   "makeup": {:hex, :makeup, "1.0.5", "d5a830bc42c9800ce07dd97fa94669dfb93d3bf5fcf6ea7a0c67b2e0e4a7f26c", [:mix], [{:nimble_parsec, "~> 0.5 or ~> 1.0", [hex: :nimble_parsec, repo: "hexpm", optional: false]}], "hexpm", "cfa158c02d3f5c0c665d0af11512fed3fba0144cf1aadee0f2ce17747fba2ca9"},
-  "makeup_elixir": {:hex, :makeup_elixir, "0.15.1", "b5888c880d17d1cc3e598f05cdb5b5a91b7b17ac4eaf5f297cb697663a1094dd", [:mix], [{:makeup, "~> 1.0", [hex: :makeup, repo: "hexpm", optional: false]}, {:nimble_parsec, "~> 1.1", [hex: :nimble_parsec, repo: "hexpm", optional: false]}], "hexpm", "db68c173234b07ab2a07f645a5acdc117b9f99d69ebf521821d89690ae6c6ec8"},
+  "makeup_elixir": {:hex, :makeup_elixir, "0.15.2", "dc72dfe17eb240552857465cc00cce390960d9a0c055c4ccd38b70629227e97c", [:mix], [{:makeup, "~> 1.0", [hex: :makeup, repo: "hexpm", optional: false]}, {:nimble_parsec, "~> 1.1", [hex: :nimble_parsec, repo: "hexpm", optional: false]}], "hexpm", "fd23ae48d09b32eff49d4ced2b43c9f086d402ee4fd4fcb2d7fad97fa8823e75"},
   "makeup_erlang": {:hex, :makeup_erlang, "0.1.1", "3fcb7f09eb9d98dc4d208f49cc955a34218fc41ff6b84df7c75b3e6e533cc65f", [:mix], [{:makeup, "~> 1.0", [hex: :makeup, repo: "hexpm", optional: false]}], "hexpm", "174d0809e98a4ef0b3309256cbf97101c6ec01c4ab0b23e926a9e17df2077cbb"},
-  "nimble_parsec": {:hex, :nimble_parsec, "1.1.0", "3a6fca1550363552e54c216debb6a9e95bd8d32348938e13de5eda962c0d7f89", [:mix], [], "hexpm", "08eb32d66b706e913ff748f11694b17981c0b04a33ef470e33e11b3d3ac8f54b"},
+  "nimble_parsec": {:hex, :nimble_parsec, "1.2.0", "b44d75e2a6542dcb6acf5d71c32c74ca88960421b6874777f79153bbbbd7dccc", [:mix], [], "hexpm", "52b2871a7515a5ac49b00f214e4165a40724cf99798d8e4a65e4fd64ebd002c1"},
   "poolboy": {:hex, :poolboy, "1.5.1", "6b46163901cfd0a1b43d692657ed9d7e599853b3b21b95ae5ae0a777cf9b6ca8", [:rebar], [], "hexpm"},
   "postgrex": {:hex, :postgrex, "0.15.9", "46f8fe6f25711aeb861c4d0ae09780facfdf3adbd2fb5594ead61504dd489bda", [:mix], [{:connection, "~> 1.0", [hex: :connection, repo: "hexpm", optional: false]}, {:db_connection, "~> 2.1", [hex: :db_connection, repo: "hexpm", optional: false]}, {:decimal, "~> 1.5 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}], "hexpm", "610719103e4cb2223d4ab78f9f0f3e720320eeca6011415ab4137ddef730adee"},
   "telemetry": {:hex, :telemetry, "0.4.3", "a06428a514bdbc63293cd9a6263aad00ddeb66f608163bdec7c8995784080818", [:rebar3], [], "hexpm", "eb72b8365ffda5bed68a620d1da88525e326cb82a75ee61354fc24b844768041"},