Added cross-section averaging functionality to the CASMO API
Merge remote-tracking branch 'upstream/develop' into develop
Fixed bugs in average calculator
Added functions to Casmo API to average cross section values across each material type and added another function to write these values to an HDF5 file.
Made HDF5 input compatible to be read into OpenMOC
Fixed stylistic bugs
Merge remote-tracking branch 'spavlick/develop'

skfl;dsja
updated gitignore, also fixed CASMO API to parse materials for asymmetric assemblies
changed '.out' files to '.txt' in the code... also deleted print debug messages
commit before merge
example commit
created self._symmetric, getSymmetric method, and setSymmetric method
now checks for symmetry--should be implemented
Trying to use symmetry detection but this isn't working well so far
WOOOOO now it detects symmetry in files YAY
updated doxygen comments
ready for pull request--all comments taken care of. sent Will an email about this with more detail
fixed the last of Will's comments--now it is ready to be reviewed for pull request. YAY.
changed getSymmetric to isSymmetric to be consistent with other boolean getters in code
changed *boolean* to *is_symmetric* for setSymmetric method