Added more TODO items.

TODO

@@ -1,3 +1,7 @@
 * Store result/errors in the TaskMeta store.
-
 * Catch exceptions from pure function tasks.
+* Need a tutorial
+* Need more documentation
+* Need a way to run without a AMQP server (see the ``backends`` branch of
+  carrot, it should make it able to run just using the python ``Queue``
+  module.)