made a few quick edits to test_cal and test_contact to get them in

line with python3. I also added a script for running all of the
tests in python3. u/benmoran56 offered help refactoring the code
to get it compatible with python3. With these minor fixes out of
the way will leave him with issue googleapis#19, which is mostly fixing of
the attachment module and probably it's test script.

tests/test_cal.py

@@ -48,10 +48,10 @@ def get(url,**params):
 	elif url == t3_url:
 		ret = Resp(event_rep)
 	else:
-		print url
-		print t1_url
-		print t2_url
-		print t3_url
+		print(url)
+		print(t1_url)
+		print(t2_url)
+		print(t3_url)
 		raise
 	if params['auth'][0] != '[email protected]':
 		raise

tests/test_contact.py

@@ -25,7 +25,7 @@ def json(self):
 
 def delete(url,headers,auth):
 	if url not in urls:
-		print url
+		print(url)
 		raise BaseException('Url wrong')
 	if auth[0] != '[email protected]':
 		raise BaseException('wrong email')