Merge pull request #1 from hollanddd/master

added tests that demonstrate library weaknesses
Adding zipcode to city/state/lat/lng csv from gladdress.
Merge branch 'master' of github.com:pcsforeducation/pyaddress
Adding parsing and lookup of the zipcode file.
Splitting address and address parser, making DSTKParser a subclass of AddressParser. Still need to break out the DSTK stuff from Address, but I'll do that while rewriting.
merged upstream