jsdoc
Merge remote-tracking branch 'origin/master'

Conflicts:
	lib/crowdflower.js
	lib/crowdflower/job.js
	lib/crowdflower/judgment.js
	lib/crowdflower/rest.js
	lib/crowdflower/unit.js

Merge conflicts introduced by @EasonWang90 and @harveyxiacn
Merge pull request #1 from qlonik/master

Merge Harvey branch with jsdoc into Eason master