* 'master' of github.com:CocoaPods/CocoaPods:
  Make sure pod removes the .git directory when cleaning (using github downloader)
  remove unused lines
  Add dummy source related spec to integration spec Fix a bug that pod name with '-' will make dummy source generate inproperly
  implement unit test for dummy source
  Move the generated dummy file under "Target Support Files/Pods"
  add a dummy source file to Pod, so that in case no source files presented, the pod lib would still compile