modified to show users' name when they logged in with Facebook
Merge branch 'master' of github.com:Do-Lee/MovieTalk
Merge branch 'master' of github.com:Do-Lee/MovieTalk
Merge branch 'master' of github.com:Do-Lee/MovieTalk
Merge branch 'master' of github.com:Do-Lee/MovieTalk
cleared some printing errors, added create-chat function and etc.