Added a filtering script for the global genome sca
 	new file:   filter.py
                --filter.py runs in the same directory hierarchy as everything else it creates a new directory into which
                it copies reformatted and (hopefully) trimmed down versions of the search results. In this step, sequences
                corresponding to taxids that only appear in one search result are discarded. This script is UNTESTED
                DANGER DANGER DANGER DRAGONS DOOM