New install doesn't pull requirements

[NPrescott]

$ pip install tasktiger
Collecting tasktiger
Installing collected packages: tasktiger
Successfully installed tasktiger-0.2

$ tasktiger
Traceback (most recent call last):
  File "/Users/nolan/.virtualenvs/tt2/bin/tasktiger", line 7, in <module>
    from tasktiger import run_worker
  File "/Users/nolan/.virtualenvs/tt2/lib/python2.7/site-packages/tasktiger/__init__.py", line 2, in <module>
    import click
ImportError: No module named click

The same occurs after cloning the repository and running python setup.py install. It appears setup.py is missing an install_requires directive for those libraries in requirements.txt.