Update 2013_08_21_143501_create_posts_table.php

Update in order to support Laravel 4.2
Update 2013_08_21_143501_create_posts_table.php

Update in order to support Laravel 4.2
Update Post.php

Update in order to support Laravel 4.2
Merge pull request #22 from mercuryseries/master

Update in order to support Laravel 4.2