Improve changelog formatting

Author: clue

CHANGELOG.md

@@ -6,10 +6,10 @@
     (#28)
 
     ```php
-$stdio->on('line', function ($line) use ($stdio) {
-    $stdio->getReadline()->setInput($line . '!');
-});
-```
+    $stdio->on('line', function ($line) use ($stdio) {
+        $stdio->getReadline()->setInput($line . '!');
+    });
+    ```
 
 ## 0.3.0 (2015-05-18)
 
@@ -28,23 +28,23 @@ $stdio->on('line', function ($line) use ($stdio) {
     (#11)
 
     ```php
-$stdio->getReadline()->setEcho('*');
-```
+    $stdio->getReadline()->setEcho('*');
+    ```
 
 *   Feature: Add accessors for text input buffer and current cursor position
     (#8 and #9)
 
     ```php
-$stdio->getReadline()->setInput('hello);
-$stdio->getReadline()->getCursorPosition();
-```
+    $stdio->getReadline()->setInput('hello');
+    $stdio->getReadline()->getCursorPosition();
+    ```
 
 *   Feature: All setters now return self to allow easy method chaining
     (#7)
 
     ```php
-$stdio->getReadline()->setPrompt('Password: ')->setEcho('*')->setInput('secret');
-```
+    $stdio->getReadline()->setPrompt('Password: ')->setEcho('*')->setInput('secret');
+    ```
 
 *   Feature: Only redraw() readline when necessary
     (#10 and #14)