initial google.py commit for new opendata module
user function added for google point query
Merge branch 'master' of https://github.com/pysal/pysal into newsphere

# By Serge Rey
# Via Serge Rey (1) and others
* 'master' of https://github.com/pysal/pysal:
  Docs
  Method for returning columns of data table as numpy arrays rather than lists
Merge pull request #537 from lanselin/newsphere

new opendata module for contrib