```
  Running setup.py develop for invocations
    /usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/dist.py:267: UserWarning: Unknown distribution option: 'requirements'
      warnings.warn(msg)

    Creating /usr/local/lib/python2.7/site-packages/invocations.egg-link (link to .)
    invocations 0.5.0 is already the active version in easy-install.pth

    Installed /Users/coderanger/src/invoke/src/invocations
```