Rename messages2 to messages.

examples/restified.py

@@ -4,7 +4,7 @@ import pkg_resources
 
 import M2Crypto
 
-from acme import messages2
+from acme import messages
 from acme import jose
 
 from letsencrypt import network
@@ -27,8 +27,8 @@ net.update_registration(regr.update(
 logging.debug(regr)
 
 authzr = net.request_challenges(
-    identifier=messages2.Identifier(
-        typ=messages2.IDENTIFIER_FQDN, value='example1.com'),
+    identifier=messages.Identifier(
+        typ=messages.IDENTIFIER_FQDN, value='example1.com'),
     new_authzr_uri=regr.new_authzr_uri)
 logging.debug(authzr)
 
@@ -38,5 +38,5 @@ csr = M2Crypto.X509.load_request_string(pkg_resources.resource_string(
     'letsencrypt.tests', os.path.join('testdata', 'csr.pem')))
 try:
     net.request_issuance(csr, (authzr,))
-except messages2.Error as error:
+except messages.Error as error:
     print error.detail