upload Widget code refactored. Implemented upload size constraint.
Bug fixes.

- Fixed login error in twitter and flickr.
- Changed twitter ajax requests to use jQuery ajax's datatype property -
json.
Merge branch 'master' of https://github.com/jeevaimaginea/SocialByWay
Merge pull request #29 from pkiran/master

Bug fixes
Upload Widget code refactoring.
- Loader added.
- Removed twitter from video upload services.
- Supported services check added in the widget.
Upload Widget code refactoring.
- Loader issue fixed.
- responseText issue fixed.
implemented util method to get meta from url for url sharing
Merge branch 'master' of https://github.com/jeevaimaginea/SocialByWay
link preview feature