OS X Notifications: Add the missing application icon again.
fixup for releasing
Merge pull request #43 from NikolausDemmel/master

OS X Notifications: Add the missing application icon again.
build: made the --start-with option more robust

fixes #60
Merge pull request #62 from catkin/issue_60

build: made the --start-with option more robust
Documented run_tests for catkin
clean up test running documentation