Update Gemfile source to https
Merge pull request #264 from nickhammond/patch-1

Update Gemfile source to https
Scenario "Deleting some busted build" tests nothing after f795ecc
Deleting last build hides all other (red test)
Fixed deleting last build
Actual deleting test
Run test on ruby 2.1 too
Merge pull request #267 from Bishop/travis

Run tests on ruby 2.1 too
Merge pull request #266 from Bishop/master

Fixed deleting last build
Fixed link to doc and pure MD in link to travis
Merge pull request #269 from Bishop/doc

Fixed link to doc and pure MD in link to travis
Rename Payload to Payload::GitHub
Payload base class; gitlab payload
Check build_all option directly, like other related options
A bit more consistency for auto_branch
Gitlab route
Simplify configuring notifiers
Removed fake 'email notifier' tests nothing
Describe notifiers config key in doc
Gitlab tests