Added test to check the scipy.linalg.expm execution
Slight changes to formatting.
Omitted print statements.
Merge branch 'staging' of https://github.com/CNERG/pyne into staging
Merge branch 'staging' of https://github.com/pyne/pyne into staging
Began xs implementation
Merge branch 'staging' of https://github.com/pyne/pyne into staging
Merge branch 'staging' of https://github.com/pyne/pyne into staging
Merge branch 'staging' of https://github.com/pyne/pyne into staging
Merge branch 'staging' of https://github.com/pyne/pyne into staging
Merge branch 'staging' of https://github.com/pyne/pyne into staging
Merge branch 'staging' of https://github.com/pyne/pyne into staging
Merge branch 'staging' of https://github.com/pyne/pyne into staging
Merge branch 'staging' of https://github.com/klebenowm/pyne into staging
Added implementation of get_daughters to transmute.py
Merge branch 'staging' of https://github.com/pyne/pyne into staging
Merge branch 'staging' of https://github.com/pyne/pyne into staging

Conflicts:
	pyne/tests/test_transmute.py
get_daughters implemented in transmute.py
Merge branch 'staging' of https://github.com/pyne/pyne into staging
Merge branch 'staging' of https://github.com/pyne/pyne into staging
Merge branch 'staging' of https://github.com/pyne/pyne into staging