Added details about array notation in README file.

Author: rmariuzzo

README.md

@@ -11,6 +11,7 @@
   - Package size is: 1.42KB (0.7KB gzipped!).
   - Supports all `<input />`s, checkboxes and `<select />`.
   - Supports `<select multiple />`.
+  - Supports checkboxes with same via [array notation](#array-notation).
   - Multiple bundles: [CJS, ESM and UMD](dist).
 
 ## Installation
@@ -85,17 +86,19 @@ By default, **react-input-handler** handles checkbox as boolean value. Sometimes
 **Before:**
 
 ```js
-  <input type="checkbox" name="numbers" value="1" onChange={ReactInputHandler.bind(this)} />
-  <input type="checkbox" name="numbers" value="2" onChange={ReactInputHandler.bind(this)} />
-  <input type="checkbox" name="numbers" value="3" onChange={ReactInputHandler.bind(this)} />
+  <input type="checkbox" name="one" value="1"   onChange={this.inputHandler} checked />
+  <input type="checkbox" name="two" value="2"   onChange={this.inputHandler} />
+  <input type="checkbox" name="three" value="3" onChange={this.inputHandler} checked />
+  // state: { one: true, two: false, three: true }
 ```
 
 **After:**
 
 ```js
-  <input type="checkbox" name="numbers[]" value="1" onChange={ReactInputHandler.bind(this)} />
-  <input type="checkbox" name="numbers[]" value="2" onChange={ReactInputHandler.bind(this)} />
-  <input type="checkbox" name="numbers[]" value="3" onChange={ReactInputHandler.bind(this)} />
+  <input type="checkbox" name="numbers[]" value="1" onChange={this.inputHandler} checked />
+  <input type="checkbox" name="numbers[]" value="2" onChange={this.inputHandler} />
+  <input type="checkbox" name="numbers[]" value="3" onChange={this.inputHandler} checked />
+  // state: { numbers: ["1", "3"] }
 ```
 
 ## Development