Use README.md

README.md

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+Flask-SignalBus
+===============
+
+**Flask-SignalBus** adds to Flask-SQLAlchemy the capability to
+*atomically* send messages (signals) over a message bus.
+
+The processing of each message involves three steps:
+
+  1. The message is recorded in the SQL database as a row in a table.
+
+  2. The message is sent over the message bus (RabbitMQ for example).
+
+  3. Message's corresponding table row is deleted.
+
+Normally, the sending of the recorded messages (steps 2 and 3) is done
+automatically after each transaction commit, but when needed, it can
+also be triggered explicitly with a method call, or through the Flask
+command line interface.
+
+
+You can read the docs [here](https://flask-signalbus.readthedocs.io/en/latest/).