Wrapper for the "list hook" API

Doc: http://developer.github.com/v3/repos/hooks/#list
s/auth_token/access_token

Correctly name the query parameter for authentication!
Add awesome_print for easier debugging
Github method to create a hook
Refactor the github adaptor with an hash option approach
Spec Github adapter constructor
Spec all ArgumentError raises in github adapter
Should mock the Github#post and Github#get calls
New route: POST /got_fixed/issues/github_webhook
Implement github webhook receiver
Spec IssuesController#github_webhook with real payload
Forgot to add the hook event json payload
Merge pull request #2 from ssaunier/github-webhook

Github webhook