suppressing FutureWarning in pyne.endf
usng simplefilter instead
moving FutureWarning suppression to a decorator in test_endf.py
removing unnecessary print statement
Update endf.pyx
Merge pull request #630 from jdangerx/endf-suppression

suppressing FutureWarning in pyne.endf
Added Biondo authorship.
Merge pull request #635 from elliottbiondo/author

authorship
some doc fixes
Merge pull request #636 from scopatz/cinst

some doc fixes