Added Twitter documentation

Signed-off-by: Akash Patel <akash@objectlounge.com>
Added comments.

Signed-off-by: Akash Patel <akash@objectlounge.com>
Created constant for consumer key and secret

Signed-off-by: Akash Patel <akash@objectlounge.com>
Renamed a view controller.

Signed-off-by: Akash Patel <akash@objectlounge.com>
Removed consumer key and secret

Signed-off-by: Akash Patel <akash@objectlounge.com>