Add user service
Merge branch 'master' of github.com:angularjs-de/angularjs-freelancer-workshop

* 'master' of github.com:angularjs-de/angularjs-freelancer-workshop:
  add basic project.json
  prepare bug tracker routes - commented out
  Added basic users.json
  set CORS Header to *
  Update README.md
  add ng-scenario to package.json
  fix unit tests
  add bower_components to the gitignore
  use bower instead of commit libs into the source