Add Masonry to Podfile

Signed-off-by: Jai Govindani <govindani@gmail.com>
Install Masonry (via Cocoapods)

Signed-off-by: Jai Govindani <govindani@gmail.com>
Add support for scroll direction, convert auto layout code to Masonry

Signed-off-by: Jai Govindani <govindani@gmail.com>
Update Example project

Signed-off-by: Jai Govindani <govindani@gmail.com>
Merge pull request #5 from jai/masonry

Add support for horizontal scrolling, migrate Autolayout code to Masonry