move tests into a module
no need to do crazy path stuff now
correct the path to README.md
remove path hacking in test_docs.py
undo requirements file magic, use editable install of KISSmetrics for testing

i'd rather not package up the requirements.txt and test-requirements.txt files.

also it's kind of silly to rely on specific paths for everything anyway
ignore egg info created by editable installation
update README.md to represent test-requirements new requirements on requirments.txt

Yo dawg....
remove install of requirements.txt for testing
add tox
add pytest.ini, remove command line flags errwhere
read in a long description from our README.md
ignore tests when calculating coverage
update pypy note

pypy versions vary wildly depending on wheter it's my laptop, travis or your machine...
fix name of PyPy, be more specific with version tested

i /think/ it's PyPy but get confused... sorry @alex
Merge pull request #20 from kissmetrics/packaging

Packaging cleanup in preparation for RC