Initial commit
init
Merge branch 'master' of https://github.com/ye11ow/checkpoint.js
Add onStageCallback. Init demo page.
Modify init, setStage method. Refined demo page.
Implemented AddStage(index, stage). Fixed a selector issue.
Introduced LESS(Unfinished)
LESSize css
Fixed a setStage bug. Added namespace. Added options
Merge branch 'gh-pages' of github.com:ye11ow/checkpoint.js into gh-pages
Added highlight. Added usage cases.