Add Roundup.

EXAMPLES

@@ -38,6 +38,7 @@ included, please mail to `the Google group
 * Python: http://docs.python.org/dev/
 * python-apt: http://people.debian.org/~jak/python-apt-doc/
 * Reteisi: http://docs.argolinux.org/reteisi/
+* Roundup: http://www.roundup-tracker.org/
 * Satchmo: http://www.satchmoproject.com/docs/svn/
 * Self: http://selflanguage.org/
 * Sphinx: http://sphinx.pocoo.org/