Merge pull request #129 from jchodera/master

Additional tests and bugfixes
Inital checkin of CI for repex
minor fixes
Added nose exclude
Try to fix pip
mpi4py
Skip slow test
Only testing testsystems for now.
rearrange travis
Reverted previous and trying new fix
Another attempt
Debug build recipe
OK, force conda to not install pip requirements during build
Removed pymbar from setup requirements
Remove nose from setup.py
Merge pull request #131 from choderalab/ci

[WIP] Inital checkin of CI for repex
Added travis encryption key
Added some betters docs to conda-recipe README
repex conda recipe now requires netcdf4
Added mpi4py to meta.yaml