Nicer bail() util.
@bugfix install bails if .opack doesn't exist.
@bugfix replaced sys.exit with bail if syntax error found.
@bugfix commented out the long_description in setup.py for now.
shell() now allows for sending output straight to stdout.
otto.utils.ChangePath now expands ~ and defaults to ~/.
Merge branch 'master' into develop
Adding a util for debugging that disables the shell util.
Bumped version number to v0.5.