Merge pull request #1 from setten/master

firs design of the 'new' dojo
Merge pull request #2 from setten/master

more factory functions ...
 Update documentation
 Add GBRV database.
 Update docs
 Cosmetic changes
Merge pull request #3 from setten/master

df setup and df convergence test scripts
 Move GBRV Workflows to pymatgen.io.abinitio
 Add GBRV csv files to the package
 Support for paral_kgb
 Code cleanup
 update reference
 Preliminary support for oncvpsp output files
 Minor changes
 Minor improvements in oncvpsp.py
 Add travis file
 Unit tests for oncvpsp
 Start to rationalize dependencies
 Code cleanup
 Try anaconda with travis