Allow clients to connect on port 8080 and 8081 #5

* Two listening connections are setup on the server on the required ports.
* tsapp expects the local TiddlySpace to be on port 8000 to remove any port conflicts (this was 8080).
* The client-side code defaults to using 8080, this is the preffered port now.
* Updated the README to reflect the above.
* bumped version to 0.2.0 as it's a fair bit of change.