dbt throws error without additional command

[jthandy]

if I just type dbt at command line i get the following error:

Traceback (most recent call last):
  File "/Users/tristan/Development/zendesk/venv/bin/dbt", line 11, in <module>
    sys.exit(main())
  File "/Users/tristan/Development/zendesk/venv/lib/python3.4/site-packages/dbt/main.py", line 43, in main
    proj = proj.with_profiles(parsed.profile)
AttributeError: 'Namespace' object has no attribute 'profile'

This should function like other bash commands and supply a list of possible well-formed commands.