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.
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
list: Adding exception handling with prettier error reporting when a directory contains an invalid package
Merge pull request #79 from jbohren-forks/catch-invalid-package

list: Adding exception handling with prettier error reporting when a directory contains an invalid package
build: Added --extend argument to control env

This enables the building of a workspace against an arbitrary realized
catkin devel- or install-space which might not currently be sourced.
This is equivalent to sourcing the setup files in the given directory in
a subshell, building, and then exiting.

- The argument to `--extend` should be a path containing valid catkin
  setup files
- It prints out CMAKE_PREFIX_PATH at the top of the build command
- Calling `--extend` also implicitly enables `--force-cmake`