add view post
add facebook
Merge branch 'master' of https://github.com/kynm/news

Conflicts:
	app/Config/common.php
	app/Controller/AppController.php
	app/View/Layouts/default.ctp
	app/View/Posts/add.ctp
	app/View/Posts/index.ctp
	app/View/Posts/view.ctp
fix view