[#3329] Tweaks to ubot to become fabbot, and changes to how fabbot works

Author: weaverryan

contributing/code/patches.rst

@@ -177,12 +177,12 @@ in mind the following:
 
 .. tip::
 
-    When submitting pull requests, `ubot`_ checks your code
+    When submitting pull requests, `fabbot`_ checks your code
     for common typos and verifies that you are using the PHP coding standards
     as defined in PSR-1 and PSR-2.
 
-    Whenever it detects problems, it kindly posts a comment on your pull request
-    with a patch.
+    A status is posted below the pull request description with a summary
+    of any problems it detects or any Travis CI build failures.
 
 .. tip::
 
@@ -408,4 +408,4 @@ of all the commits. When you finish, execute the push command.
 .. _`travis-ci.org status icon`:           http://about.travis-ci.org/docs/user/status-images/
 .. _`travis-ci.org Getting Started Guide`: http://about.travis-ci.org/docs/user/getting-started/
 .. _`documentation repository`:            https://github.com/symfony/symfony-docs
-.. _ubot:                                  http://ubot.io
+.. _`fabbot`:                              http://fabbot.io