FIX: Travis-CI error InsecurePlatformWarning
FIX: Travis-CI error InsecurePlatformWarning

InsecurePlatformWarning when attempting to pip install python-coveralls, changed to coveralls

neutronpy/neutronpy,pseudocubic/neutronpy,neutronpy/neutronpy,granrothge/neutronpy,pseudocubic/neutronpy,granrothge/neutronpy