Completed youtube updates to the database

1. Added youtube feeds check from the db.
2. Updated the db with proper schema for youtube feeds.

Signed-off-by: Devang Desai <devangvdesai@gmail.com>
Completed pagination for feeds

1. Added pagination support for Twitter feeds.
2. Updated Youtube API for search.

Signed-off-by: Devang Desai <devangvdesai@gmail.com>
Merge pull request #9 from dpoetonwheels/youtube_videos

Youtube videos and pagination