deleted unused gems(rash and hashie)
Update with refactored rubykhan.rb and rubykhan_spec

Merge branch 'master' of github.com:DannyCrews/rubykhan
deleted .idea and tmp folders. Version 0.0.9
merging with dan's repo
Merge branch 'master' of github.com:DannyCrews/rubykhan
changed httparty to a mixin and updated the http get methods to khanacademy::playlist.get