Engine: Fixed changeset_test tests
Merge pull request #3317 from daviddavis/temp/20131105122213

Engine: Fixing changeset tests
Engine: Adding development setup and reset documentation to README.
Engine: Fixed a namespace issue

Made OwnRole extend Katello:Role instead of foreman Role
Merge pull request #3322 from parthaa/own_role

Fixed a namespace issue
Merge pull request #3303 from ehelms/engine-documentation

Engine: Adding development setup and reset documentation to README.