Update README.md

README.md

@@ -1,6 +1,20 @@
 # CubeSatSim
 
-See the Wiki for more details.
+See the Wiki for more details. To build and run the software:
+
+`git clone http://github.com/alanbjohnston/CubeSatSim.git`
+
+`cd CubeSatSim`
+
+`make rebuild`
+
+To hear CW telemetry (Morse code), tune your radio or SDR to 435.297 MHz and enter:
+
+`./radiocw`
+
+To stop, Ctrl-C.  To hear AFSK telemetry (X.25 data), your radio or SDR to 440.389 MHz FM, and you should receive telemetry from the CubeSat Sim:
+
+`./radioafsk`
 
 Raspberry Pi code using the Brandenburg Tech Digital Transceiver 
      https://brandenburgtech.wordpress.com/-