Added first R2S function, needs integration tests.
Merge branch 'meshtal' into r2s
Added r2s step 2 function, starting tests
Nearly done with r2s step 1 testing. Need to fix materail on mesh read/write issue.
Merge branch 'staging' of github.com:pyne/pyne into r2s
Step 1 working and tested.
step 2 test complete
Cleanup and adding file necessary for test
Fixed flux ordering test failure.
Fixed mesh_file material reading and added test.
Replaced try/except with pytables.
Changed pytables syntax
Resolving double opening of hdf5 file.