1. Copy migrate folder into your protected/gii folder.
2. Configure your application:

   	'modules'=>array(
   	  // uncomment the following to enable the Gii tool
   	  'gii'=>array(
   	   'class'=>'system.gii.GiiModule',
   	   'password'=>'password',
   		// If removed, Gii defaults to localhost only. Edit carefully to taste.
   	   'ipFilters'=>array('127.0.0.1','::1'),
   	   'generatorPaths'=>array(
   		'application.gii',
   	   ),
   	   ...
   	  ),
   	

This extention can:

• generate migration code;
• flush cache (checkbox);
• clear assets (checkbox).

Note: For flush cache and clear assets future you need to configure you console configuration to using assetManager and cache components.