Remove local git handling, as we're going to leverage merged checkouts of PR
Drop 'systemu' gem, as this was used by the removed git functionality
Remove obsolete functionality from Repository
Provide the actual pull request id as method argument in specs
Replace testing branch with refspec for merged pull request

This delegates the former local git handling entirely to github
Update Readme instructions for Jenkins
Merge branch 'master' of github.com:vaneyckt/Jently into skorfmann-delegate-pr-merging-to-github

Conflicts:
	lib/git.rb
	lib/helpers/repository.rb
	lib/jenkins.rb
	spec/git_spec.rb
	spec/helpers/repository_spec.rb
	spec/jenkins_spec.rb
Merge pull request #38 from vaneyckt/skorfmann-delegate-pr-merging-to-github

Skorfmann - delegate pr merging to github