Merge pull request #11 from deedeelavinder/master

a few profile#show modifications
Cleaned up profile#index view and added gravatar to index view
Merge pull request #12 from deedeelavinder/master

user feed showing only posts from followed_users plus self
Merge pull request #13 from deedeelavinder/master

little gravatars
Updated styles
Modified show_follow to show message if zero followers/followed users
little stuff