Updated README.md

- added GIF animation
- described settings
- described usage and key bindings

Author: amaslenn

README.md

@@ -1,4 +1,26 @@
 Laynger
 =======
 
-Laynger (Layout Changer) is a plugin for Sublime Text 2/3 which allows to change layout borders using keyboard
+Laynger is a plugin for Sublime Text 2/3 which allows user to change central border in 2-columns layout using keyboard.  
+
+![alt tag](https://raw.githubusercontent.com/amaslenn/Laynger/master/laynger.gif)
+
+## Settings
+Default settings
+
+    {
+        // save and restore borders
+        "keep_layout": true,
+
+        // save and restore files in groups
+       "keep_groups": true
+    }
+
+## Usage
+`Alt + Shift + Left/Right`: move central border to the left/right  
+`Alt + Shift + d`: revert central border to default position (center)
+
+Since plugin keeps groups and positions of the files, it is useful to overwrite default key bindings (_you can copy them from Default Key Bindings of the Laynger to User's one and uncomment_)
+
+    { "keys": ["alt+shift+1"], "command": "laynger", "args" : { "opt": "1_column"} },
+    { "keys": ["alt+shift+2"], "command": "laynger", "args" : { "opt": "2_columns"} }