Enable .travis
npm init
Update README
Apply cybertk/npm-scaffolding
Bootstrap
Support $def
Support $required
Support parse from file
Bump to 0.1.0
Support array schema
Fix: Does not support array contains simple type, i.e. ['string']
Support `parseSync`
Bump to 0.1.1
Support $raw
Support $include
Support 'number' type
Support $defs in array item
Update Readme
Support cascading $def
Support global $def defined by `$_`