do some code structure stuff
bugfix: fix a bug that has no permission writing file to system directory
Add `_on.jsx` to simplify event handling
Add lib files: `take`, `vent` & refactoring code and tweak project directory structure
Move `underscore.jsx` frome `vendor` to `lib`
do some dialog view configuration modification
add some more helper method in `_util`
Augument `on`'s functionality
preparing biz, implement `Source Images` block logic
Add `sprite` biz logic
Add `css` biz logic
Add `output` biz logic
bugfix: fix a bug when file and folder happened with the same name while loading modules
do some clean up stff
Add `JSON` module
Add some more utility methods
Add `moment` module
Implement `build sprite` & `build css` feature