Minor style cleanup
Make all example jobs capable of processing multiple input files
Fixed scalastyle-config to accept ScaMR's "weird" method names (-->, ++, _1, etc)
Style cleanup: refactored some long methods for readability
removed internal ooyala nexus repo from repositories,
since it's (1) inaccessible outside ooyala and (2) not needed.
scalastyle: Increased max methods per class to 45.

This silences the warning about WritableConversions