A GitHub responder for Hedwig.

After you create a Hedwig robot, add hedwig_github to your list of dependencies in mix.exs:

def deps do
  [{:hedwig_github, "~> 0.1.1"}]
end

Ensure hedwig_github is started before your application:

def application do
  [applications: [:hedwig_github]]
end

Lastly, add HedwigGithub.Responders.Github as a responder to your robot in mix.exs.