Add proxy mechanism for HTTP get requests to yelp website.
Merge branch 'master' of heroku.com:yelppredict

Conflicts:
	app/helpers/users_helper.rb
Merge branch 'master' of https://github.com/chinhtle/yelp_predict

Conflicts:
	app/helpers/users_helper.rb
Add additional check to rescue from 403 on HTTP GET request.