PYTHON-967 - Call print as a function in README

Author: behackett

README.rst

@@ -134,15 +134,15 @@ Here's a basic example (for more see the *examples* section of the docs):
  >>> db.my_collection.find_one()
  {u'x': 10, u'_id': ObjectId('4aba15ebe23f6b53b0000000')}
  >>> for item in db.my_collection.find():
- ... print item["x"]
+ ... print(item["x"])
  ...
  10
  8
  11
  >>> db.my_collection.create_index("x")
  u'x_1'
  >>> for item in db.my_collection.find().sort("x", pymongo.ASCENDING):
- ... print item["x"]
+ ... print(item["x"])
  ...
  8
  10