+Some testing material to work with Psycopg2 with coroutine_ support.
+One of upcoming Psycopg version will have coroutine support. In order to use
+them a coroutine framework, such as Eventlet_ or gevent_, should implement a
+"wait callback" as an hook to schedule a coroutine switch while a libpq call is
+In this project there are wait callback implementations for a few coroutine
+libraries: they are licensed in order to allow their inclusion in the library.
+.. _coroutine: http://en.wikipedia.org/wiki/Coroutine
+.. _Eventlet: http://eventlet.net/
+.. _gevent: http://www.gevent.org/