Start on allowing crimes to be grepped
lay the foundation for the grep
we don't need to grep on crime_type lookup. grep only applies to TYPE crimes
flesh out the beginning of the grep. beginning may be good enough.
added a list of the crime types, which got the grep working. Still a kludgy hack on the grep var type
cleanup
hunting down a false-positive when no location is passed to get_specific_crimes
fix the false-positive. was querying the wrong field, duh.
cleanup
clarify the options passed in the examples
added option for querying different CSVs
fix that grep option
small fix