Merge pull request #9 from yuhua-chen/will

Fix ripple effect for adding ripple-out css animation.
Update README
Merge pull request #10 from yuhua-chen/michael

Add a demo site link
Fix multiple click bug, Change default ripple color to white.
Merge pull request #11 from yuhua-chen/will

Change default settings of ripple effect, fix few bugs and make animation more smoothly.
Merge branch 'master' into gh-pages

Conflicts:
	demo.html