Created a simple poc of using Github as content loader.
Using Guzzle's own JSON decoding functionality.
Moved auth from each request to a plugin.
Caching the content fetched from Github. Caching is turned off by default on both loaders.
Better exception handling when requests to Github are failing.
Merge pull request #17 from RobinvdVleuten/github

Add Github as content provider. Fixes #5.