Clear space for 2.0 branch
Initial commit of version 2.0, including dd datatype
Tweak licence to reflect 3 clauses
Reformat README
Reformat README
Remove boilerplate license
Flesh out c++ sampling interface
Add travis yaml.
Add pep8 and pyflakes.
Add cmake build to travis.
Disable virtualenv caching because it breaks pep8.
Merge pull request #26 from priorknowledge/travis

Travis
Implement 3 versions of dd model
Add CI candy
Use newer cython from pip
Print cython version during install
Comply with pep8, pyflakes
Sketch DPM datatype (not working yet)
Add ctest to get cleaner g++ errors
Get dpm_cc.pyx to compile