Added changes necessary for single version control file.
Switched import style for version import
typo
Testing setup.py issue in travis
Moved tests out of source tree
Renamed oldtestsystems as testsystemsv2.py
Added new copyright headers
Switched from distutils to setuptools
Merge pull request #46 from choderalab/kab_hackathon

Added changes necessary for single version control file.
Some changes to docs
Updated installation instructions
Merge pull request #51 from choderalab/docs

Simplified Installation instructions in docs
Fixed missing code block in installation docs
Merge pull request #52 from choderalab/docs2

Fixed missing code block in installation docs