Quick and dirty implementation of horizontal scroll snapping.
Just committing before making crazy changes.
Horizontal scrolling is snapping to the center.
Removed snapping to center. Snapping to left is desired.
After all that, I discovered that horizontal scrolling was super easy to add.
Added horizontal scrolling to the demo.
Removed commented code.
Removed spaces between images.
Removed references to vertical.
Merge pull request #11 from mattg/horizontal

Added horizontal snapping