Update README.md

Igor Chepurnoy · Igor Chepurnoy · commit a20b2577a937 · 2015-03-27T12:50:38.000+02:00
diff --git a/README.md b/README.md
@@ -21,7 +21,7 @@ or add
 to the require section of your composer.json.
 
 
-Usage
+Usage Editable column
 ======================================
 In your gridview columns section
 ```php
