Updated README

README.rst

@@ -12,12 +12,21 @@ Transactional Celery for Pyramid
         :target: https://pypi.python.org/pypi/pyramid_transactional_celery
 
 
-A transaction-aware Celery job setup
+A transaction-aware Celery job setup. This is integrated with the Zope
+transaction_ package, which implements a full two-phase commit protocol.
+While it is not designed for anything other than Pyramid, it also does not
+use any component of Pyramid. It's simply not tested anywhere else.
 
 * Free software: BSD license
 * Documentation: https://pyramid_transactional_celery.readthedocs.org.
 
+.. _transaction: https://pypi.python.org/pypi/transaction
+
 Features
 --------
 
-* TODO
+* Queues tasks into a thread-local when they are called either using ``delay``
+  or ``apply_async``.
+* If the transaction is aborted, then the tasks will never be called.
+* If the transaction is committed, the tasks will go through their normal
+  ``apply_async`` process and be queued for processing.