Added requisite parenthese to print() in example.

A quick change to the example and the readme so the example works out of the box.  Print changed in Python3 per <a href='http://docs.python.org/3.0/whatsnew/3.0.html#print-is-a-function'>http://docs.python.org/3.0/whatsnew/3.0.html#print-is-a-function</a>.

Fixes the following syntax error:
$ python3 example.py 
  File "example.py", line 26
    print results
                ^
SyntaxError: invalid syntax