Updated docs for extension approval process

docs/extensiondev.rst

@@ -277,6 +277,46 @@ The best Flask extensions are extensions that share common idioms for the
 API.  And this can only work if collaboration happens early.
 
 
+Approved Extensions
+-------------------
+
+Flask also has the concept of approved extensions.  Approved extensions
+are tested as part of Flask itself to ensure extensions do not break on
+new releases.  These approved extensions are listed on the `Flask
+Extension Registry`_ and marked appropriately.  If you want your own
+extension to be approved you have to follow these guidelines:
+
+1.  An approved Flask extension must provide exactly one package or module
+    inside the `flaskext` namespace package.
+2.  It must ship a testsuite that can either be invoked with ``make test``
+    or ``python setup.py test``.  For testsuites invoked with ``make
+    test`` the extension has to ensure that all dependencies for the test
+    are installed automatically, in case of ``python setup.py test``
+    dependencies for tests alone can be specified in the `setup.py`
+    file.  The testsuite also has to be part of the distribution.
+3.  APIs of approved extensions will be checked for the following
+    behavioristics:
+
+    -   an approved extension has to support multiple applications
+        running in the same Python process.
+    -   it must be possible to use the factory pattern for creating
+        applications.
+
+4.  The license has to be BSD/MIT/WTFPL licensed unless a depending
+    library absolutely enforces GPL or another license.
+5.  The naming scheme for official extensions is *Flask-ExtensionName* or
+    *ExtensionName-Flask*.
+6.  Approved extensions must define all their dependencies in the
+    `setup.py` file unless a dependency cannot by met because it is not
+    available on PyPI.
+7.  The extension must have documentation that furthermore uses one of
+    the two Flask themes for Sphinx documentation.
+8.  The setup.py description (and thus the PyPI description) has to
+    link to the documentation, website (if there is one) and there
+    must be a link to automatically install the development version
+    (``PackageName==dev``).
+
+
 .. _Flask Extension Wizard:
    http://github.com/mitsuhiko/flask-extension-wizard
 .. _OAuth extension: http://packages.python.org/Flask-OAuth/