Merge pull request #1 from phuongnq/master

add ignore file
Merge pull request #2 from phuongnq/master

fb login
Merge pull request #3 from phuongnq/master

add to User table
Addtional fix for "Double FB log-in"
Merge pull request #4 from phuongnq/master

add login page
Minor storyboard design change & Fix bug setNeedsStatusBarAppearanceUpdate
Fix FB Redirect: CFBundleURLTypes
login/logout