Modified vos client setup to be based from ossos.storage so that all references to vos are contained in one location.
removed direct reference to vos, use 'storage' instead.
made call to get_mopheader always use storage access method, removed fall back to requests package.
Massive PEP8 cleanup
Massive PEP8 cleanup and also made 'Discovery' into a boolean so that resolves #324
added __nonzero__ to provide boolean function ability in pre 3.0 python.
Merge remote-tracking branch 'origin/master'

Conflicts:
	src/ossos-pipeline/ossos/mpc.py
	src/ossos-pipeline/ossos/storage.py