Merge pull request #41 from rpandey1234/master

use AddThis for sharing
add fb open graph meta tags
add gulp for build system
fix lint errors from gulp
Merge pull request #42 from rpandey1234/fb

Facebook open graph tags and add gulp
change names to ytann
add google analytics
google plus login works
working on showing num annotations on all users page
Merge pull request #43 from rpandey1234/goog

Update google sign in
add support for num public annotations per user
move logout button, start on about section
voting works
show upvoted videos on profile page
Merge pull request #44 from rpandey1234/vote

Upvoting and display
correct fb description
rough sorting of home page
set num_upvotes on ann creation
add sorting to home page
add about page