Add ngCookies module
Use cookie for easy retrieval of GitHub token
Serve index for unknown requests, allowing Angular to handle routes.
Null file - used for intercepting cached API results

Because Angular does not seem to allow cancellation of HTTP requests in interceptors, we just swallow the request and do our best to minimize the response time.
SessionStorage service
Test SessionStorage
Initial GitHub module
Merge pull request #4 from eyelidlessness/features/initial-github

Initial GitHub module