Replace a flag to dynmic functions in observeKeybordInput.
Fix format of comments of tool.js.
Refactor tool.js to split functions.
Refactoring tool.js with Underscore.js.
view.renderer.relation.arrangePosition is a private function.
A self-relation is not support.
Splict private functions in domUtil.selector.relation.
Replace setTimeout 0 to _.defer.
Replace bind null to _.partial.
Merge pull request #6 from pubannotation/refacotor_with_underscore

Refacotor with underscore