Add license and classifiers to setup.py.
Add license and classifiers to setup.py.

rafapereirabr/pandana,synthicity/pandana,waddell/pandana,SANDAG/pandana,synthicity/pandana,osPlanning/pandana,SANDAG/pandana,UDST/pandana,osPlanning/pandana,SANDAG/pandana,osPlanning/pandana,rafapereirabr/pandana,waddell/pandana,UDST/pandana,waddell/pandana,SANDAG/pandana,rafapereirabr/pandana,waddell/pandana,osPlanning/pandana,synthicity/pandana,synthicity/pandana,UDST/pandana,rafapereirabr/pandana,UDST/pandana