Merge pull request #103 from python-modernize/release-0.4-branch

Link to docs in changelog

Author: takluyver

CHANGELOG.rst

@@ -3,7 +3,7 @@ Version 0.4
 
 Changes since 0.3:
 
-* Documentation has been added.
+* `Documentation`_ has been added.
 * All fixers are now idempotent, which allows modernize to safely be applied
   more than once to the same source code.
 * The option to include default fixers when ``-f`` options are used is now
@@ -39,6 +39,8 @@ Changes since 0.3:
   Python 2.6, such as the ``except ... as`` construct, but this was not
   documented.)
 
+.. _Documentation: http://python-modernize.readthedocs.org/en/latest/
+
 
 Version 0.3
 ===========