Initial add of ssw_combine.py example
Minor style fixes.
Add table 1 to example script.
Merge branch 'staging' into surfsrcexample
MCNP.py -> pyne.mcnp; fix imports order per pep8.
Merge remote-tracking branch 'origin' into surfsrcexample

Conflicts:
	pyne/mcnp.py
math -> numpy
Merge pull request #300 from erelson/surfsrcexample

Add ssw_combine.py to examples/