small README

examples/tcp/README.txt

+A simple (mostly Java) example of a LabComm channel over TCP
+
+The class labcommTCPtest/Example.java contains set up of a server
+and a client, and can be run by 'make run' 
+
+Also included is a generic decoder in python, and a server that only sends
+one sample to the first client that connects, and then closes the connection
+and exits.
+
+Those can be run by
+
+* first, in one terminal: make runOSserver
+* then, in another terminal: ./runpy localhost 9999
+