remove a call to json.dumps and replace with dumps
Switch existing epydoc to sphynx style
Add _handleReceivedMessage
Merge branch 'start_sphynx' into file_send_message
fix handle receive message
Start using deferred in the message processing

Use a message handler to handle the unique messages and allow line
receiver to just receive lines.

The lineReceiver method now sets up a deferred to handle the messages.

If it is working correctly, and there is an error handling the message,
then the _handleError (NAME WHICH WILL BE CHANGED) errBack will get called
Errback called when unknown message is sent

Add both the code and test showing that an err back is called.

In the future this is where you could add logic to request a resend of the
message.
Merge pull request #6 from derwolfe/message_handler

Message handler