Added python-sphinx dependency.
Updated provisioning script to install texlive 2014 from network.
Added sphinxcontrib-bibtex
Added back texlive and ghostscript as yum packages because they are apparently needed to compile doxygen.
Added pip to conda.
Fixed issue with pip install.
Added omitted unpacking script for texlive.
Disabled automatic box updating.
Added debug statements to provisioning script.
Attempting chef/centos-6.6
Made echo statements stand out more.
Fixed some further issues with provisioning script.
Fixed an error in updating paths.
Merge pull request #13 from jchodera/master

Upgrade to chef/centos-6.6 and lots of fixes for compiling OpenMM distributions.