Add .travis.yml for Travis CI
Switch from nose to pytest

Nicer output when asserts fail

Also more actively maintained and more flexible (e.g.: fixtures,
conftest.py)
tox.ini: Add py33, py34
Support Python 2.6
Add script for creating test virtualenv

so that tests are not reliant on /home/vineet/.virtualenvs/equimapper
Merge branch 'msabramo-create_virtualenv_for_tests'
Resolve merge conflicts in tox.ini
Merge branch 'msabramo-py26'
Merge pull request #5 from msabramo/travis

Add .travis.yml for Travis CI
Resolve merge conflicts
Merge branch 'msabramo-pytest'
Resolve merge conflict
Merge branch 'msabramo-tox_py33_py34'
Add more envs to travis.yml
Add pickle_env.py

Tool for generating pickle files used by tests
Add test_render_tree_cyclic_dependency

Test for issue in #13 (https://github.com/naiquevin/pipdeptree/issues/13)
Fix infinite recursion for cyclic deps

Fixes #13 (https://github.com/naiquevin/pipdeptree/issues/13)