adds rubocop and ci raketask for the future
Rubocop autocorrect
remove rubyforge from gemspec
Merge pull request #81 from pxlpnk/add_rubocop

Add rubocop, use rubocop autocorrect and retire rubyforge from gemspec ✞
Update README.md

It took me a while to make the connection between 

    payload[:host] = request.host

in the controller and

    event.payload[:host]

in the custom_options lambda. This or something like it should make it a little more clear.
Resolves formatting issues
Merge pull request #82 from roidrage/patch-1

README patch to clarify `custom_options` usage.