Add usage example of looping over a range to README and update benchmar…

README.md

@@ -9,6 +9,7 @@ Some random C# extension methods I've found useful. Published as Ardalis.Extensi
 
 - [Installation](#installation)
 - [Usage](#usage)
+   - [Enumerable](#enumerable)
    - [String checks](#string-checks)
 - [Conventions for Contributors](#conventions-for-contributors)
 - [Benchmarks](#benchmarks)
@@ -24,6 +25,22 @@ dotnet add package Ardalis.Extensions
 
 ## Usage
 
+### Enumerable
+
+RangeEnumerator allows you to loop over a range of integers up to and including the ending value.
+
+```csharp
+// replace
+for(var i = 0; i <= 10; i++)
+
+// with
+foreach(var i in 0..10)
+// or
+foreach(var i in ..10)
+// or 
+foreach(var i in 10)
+```
+
 ### String Checks
 
 IsNull() checks whether a given string is null.

benchmarks/Ardalis.Extensions.Benchmarks/Enumerable/RangeEnumeratorBenchmarks.cs

@@ -13,7 +13,7 @@ public class RangeEnumeratorBenchmarks
   [Benchmark(Baseline = true)]
   public void NormalForLoop()
   {
-    for (int i = 0; i < End; i++)
+    for (int i = 0; i <= End; i++)
     {
       DoNotOptimizeAway(i);
     }