Re-structure the Verify methods to include all functionality

One of the missing elements was viewing a single verification. To accomplish this the old `verify` method was moved to be called `verify_verify` (I know, a bit strange, but it works), while the `verify` method now only views a specific verification.

The `verify_create` method was altered to only require the required paramater from the API (`recipient`). The `originator` paramater is now an optional.

Author: Sam Wierema

Diff for: messagebird/client.py

@@ -106,11 +106,15 @@ def lookup_hlr_create(self, phonenumber, params={}):
     """Perform a new HLR lookup."""
     return HLR().load(self.request('lookup/' + str(phonenumber) + '/hlr', 'POST', params))
 
-  def verify(self, id, token):
-    """Retrieve the information of a specific message."""
-    return Verify().load(self.request('verify/' + str(id), params={'token': token}))
+  def verify(self, id):
+    """Retrieve the information of a specific verification."""
+    return Verify().load(self.request('verify/' + str(id)))
 
-  def verify_create(self, originator, phonenumber, params={}):
+  def verify_create(self, recipient, params={}):
     """Create a new verification."""
-    params.update({ 'originator' : originator, 'recipient' : phonenumber })
-    return Verify().load(self.request('verify', 'POST', params))    
+    params.update({ 'recipient' : recipient })
+    return Verify().load(self.request('verify', 'POST', params))
+
+  def verify_verify(self, id, token):
+    """Verify the token of a specific verification."""
+    return Verify().load(self.request('verify/' + str(id), params={'token': token}))