Merge pull request #667 from bitdeli-chef/master

Add a Bitdeli Badge to README
Add a Bitdeli badge to README
Make smoother swipe animation

supportClassList to support.classList
Merge pull request #676 from dongseok0/smoother_animation

Make smoother swipe animation
2.5.1

Renamed lib/ -> src/
Fixed #670
Fixed #584
2.5.1
2.5.1 Release