rewrite the helper.js for extendability
place bonus (not built-in) helpers into 'lib' folder
rewrite test cases for the new helper.js
remove customizable feature
update npm config and bower config
update README document
update jshint config
remove src and docs
update build script
update build script
update Makefile script
fix bug of strWidth() helper
update build script
return helper object from .load()
update bonus helper library
update build script
rebuild with version 0.2.0