Fix in OpenMCDataSource for threshold reactions
add compatibility for version 2.0.0 header

quick fix
VnV start.
added threshold reaction test
Merge pull request #521 from scopatz/ace_fix_omcods

Fix in OpenMCDataSource for threshold reactions
Rough draft of VnV guide
Proofread.
Ubuntu build script.
clean up
updated to fix material.mcnp issue
PR tweaks.
Documenting MOAB and PyTAPS as optional dependencies.
updated intro for rpsd2014 tutorial.
updated reaction names for rpsd2014; just a few grammar corrections.
added comments and spacing for the rpsd2014 tutorial.
sort of have pyne working, so updated a missing pyne execution step.
Merge pull request #535 from rachelslaybaugh/develop

updating some tutorial material for rpsd2014
Add links to different languages in style guide
Merge pull request #533 from elliottbiondo/install

Ubuntu build script
Merge pull request #532 from elliottbiondo/VnV

V&V dev guide entry