Updated latest yui version in configs
Adding proxy capability to requests

Proxy information is retrieved from the following locations (in that order):
- yogi.json configuration file (proxy is the name of the key)
- env variable https_proxy
- env variable HTTPS_PROXY
Added some jshint configs for loader cmd
Merge branch 'master' of git://github.com/wria/yogi into wria-master
Cleaning up hint errors in #55
Version Bump
Docs