started styleguide.
Added cython section
C/C++ style guide added.
Spellcheck on sg
fixed bash block in UUIDs
sg updates based on @crbates recommendations
Merge branch 'sg' of github.com:scopatz/pyne into sg
the dots must flow!
Incoprorated feedback from katy and matt.
switched good/bad
devsguide/style_guide.rst
fixed some typos
updated sg for meshes
Merge pull request #257 from scopatz/sg

Style Guide
added a bunch of constants to data
Added docstrings to constants.
shameful spelling error
Merge pull request #282 from scopatz/na

Implements physical constants in data
Merge branch 'staging' of github.com:pyne/pyne into alara_comp
Minor changes for PR.