going to town on travis ci
generated new stable-req.txt to improve installation
removing raising badconf

doesn't help anyone when it obscures the source of the problem
split out pre reqs into pre-reqs.txt
what breaks if we don't install tables?
fixing last travis step
fixing deps
Update requirements.txt
try to fix failing tests
try testing with install instead of develop
changing back
Merge pull request #38 from openworm/install-zodb

Improved install procedure