use resemble in phantomjs but lose high performance like before
remove canvas for partial screenshot
compile in windows
remove node-canvas description, byebye, node-canvas
fix selector error on windows
remove scripts
add resemble pool
add partial canvas pool
add multi-thread command line
refactoring console status log
add new version 0.10.2
add video introduction in readme
Merge branch 'multi-instances'
Merge branch 'master' of github.com:winsonwq/viff

Conflicts:
	README.md
Merge pull request #2 from winsonwq/master

upmerge