Merge pull request #41 from bmadhu/master

New Group is added to contacts
Fixed issue of adding group multiple times(for click button ng-click="" and for form ng-submit="") removed one occurance.
Added a flag group:false to new contact and group:true for new group. to filter the contacts only in newgroup.html screen contacts list.
Merge pull request #42 from ksrikanthreddy/master

Fixed issue of adding group multiple times
Added clearing message after send in chat.html page.
Merge pull request #43 from ksrikanthreddy/master

Added clearing message after send in chat.html page.
Added socket.io in the application.
Merge pull request #44 from ksrikanthreddy/master

Added socket.io in the application.
Added footer in addnew contact and chat screen.