finished project

Upvote & Downvote is done (only login user can vote)
Search is working 
Home page Category Products listing 
Product sorting using categories dropdown
FirstName, LastName, Address on Register page -- done
Remember Me Checkbox removed from signin page
Products listing page -- redesigned
Product Detail page with comments (disqus.com plugin integrated)
Twitter Share is working fine
Facebook Share will be work only on production server (while app will be deploy on vps)
Steps For:
Facebook & Twitter 

1] Create New App on Twitter & Facebook Developer Site
https://dev.twitter.com
https://developers.facebook.com/

Get New API key and token and replace into following file respectively
GreenThumb/config/initializers/omniauth.rb