Apply Python 3 futurize transform libfuturize.fixes.fix_print_with_import

Refer #256

examples/print-messages

@@ -21,6 +21,7 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 # THE SOFTWARE.
 
+from __future__ import print_function
 import sys
 import os
 import optparse
@@ -43,7 +44,7 @@ parser.add_option_group(zulip.generate_option_group(parser))
 client = zulip.init_from_options(options)
 
 def print_message(message):
-    print message
+    print(message)
 
 # This is a blocking call, and will continuously poll for new messages
 client.call_on_each_message(print_message)