Add SKILL.md and support --version option

Cargo.toml

@@ -7,7 +7,7 @@ repository = "https://github.com/sundy-li/arrow_cli"
 edition = "2024"
 license = "Apache-2.0"
 name = "arrow_cli"
-version = "0.4.0"
+version = "0.4.1"
 
 
 [dependencies]

SKILL.md

@@ -0,0 +1,83 @@
+---
+name: arrow-cli
+description: Use `arrow_cli` to connect to a Flight SQL server and run SQL.
+---
+
+# arrow_cli
+
+`arrow_cli` is a command-line client for connecting to a Flight SQL server and executing SQL queries.
+
+## Install
+
+```bash
+cargo install arrow_cli
+```
+
+After installation, confirm that the binary is available:
+
+```bash
+arrow_cli --version
+```
+
+## Usage
+
+### Execute one SQL statement and exit
+
+```bash
+arrow_cli --host localhost --port 8900 --user admin --password abc --command "select 1"
+```
+
+Output:
+
+```text
++----------+
+| Int64(1) |
++----------+
+| 1        |
++----------+
+
+1 rows in set (tickets received in 0.008 sec, rows received in 0.012 sec)
+```
+
+### Pipe SQL through standard input
+
+```bash
+echo "select 1" | arrow_cli --host localhost --port 8900 --user admin --password abc
+```
+
+Output:
+
+```text
+1
+```
+
+### Option: print the result schema
+
+```bash
+arrow_cli --host localhost --port 8900 --user admin --password abc --print-schema --command "select number from numbers(3);"
+```
+
+Output:
+
+```text
++----------+
+| Int64(1) |
++----------+
+| 1        |
++----------+
+
+Schema {
+    fields: [
+        Field {
+            name: "Int64(1)",
+            data_type: Int64,
+        },
+    ],
+    metadata: {},
+}
+
+1 rows in set (tickets received in 0.008 sec, rows received in 0.010 sec)
+```
+
+## Other notes
+- Run `arrow_cli --help` for more details

src/main.rs

@@ -10,6 +10,7 @@ use clap::Parser;
 use tonic::transport::{ClientTlsConfig, Endpoint};
 
 #[derive(Debug, Parser, PartialEq)]
+#[command(version)]
 struct Args {
     #[clap(short = 'u', long, default_value = "root", help = "User name")]
     user: String,