add new demos
add new demo
Merge branch 'master' of https://github.com/zhang-ning/zhang-ning.github.com

Conflicts:
	resume-river/index.html
	river/canvas/liner.js
	river/canvas/painter.js
	river/index.html
	river/two-way-binding/twowaybinding.html
	river/two-way-binding/twowaybinding.js
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