spacing in new test file

Author: Kevin Burke

tests/test_credentials.py

@@ -4,10 +4,12 @@
 from twilio import TwilioException
 from twilio.rest import TwilioRestClient, find_credentials
 
+
 def test_creds_not_found():
     """ I shouldn't find credentials if they are not there """
     assert_equal(find_credentials({'foo': 'bar'}), (None, None))
 
+
 def test_find_creds():
     """ I should find the credentials if they are there """
     env = {
@@ -17,6 +19,7 @@ def test_find_creds():
     }
     assert_equal(find_credentials(env), ('AC123', '456'))
 
+
 @patch("twilio.rest.find_credentials")
 def test_creds_error(creds):
     creds.return_value = (None, None)