update 2.0 readme.md
Merge branch 'master' into Version-2.0
add left screen, right screen, goto screen
update readme.md
add forward.png
update readme.md
update index.js
add _screen property to cellContent
code refactor
after window resize, remake the desktop grid
Merge branch 'master' into Version-2.0
update readme.md
update readme.md
Update README.md
Update README.md
code refactor, prepare for 2.0.1
an large code refactor, optimize the manner of process resise event of window
code refactor, 15:49
add feature, processScreenUserDefined, fixed ie-8 bug when resize window.
add some comments.
add createScreenThumbnail(), add highlightGridScreenThumbnail()
code refactor