Merge pull request #74 from liangji101/develop

merge of feature mocha/YUI sandbox/share test params
Using mkdirp instead of node-fs to create directory
Merging from master
Merge pull request #75 from pranavparikh/master

Using mkdirp instead of node-fs to create directory
use local file system's yui
get yui src from node_modules not from combo server
fix some bugs