doc updates

README.md

@@ -4,4 +4,23 @@ A python client for using Meshtastic devices. This small library (and example ap
 
 Full documentation including examples and installation instructions [here](https://meshtastic.github.io/Meshtastic-python/meshtastic/index.html).
 
+But suffice it to say, it is really easy:
+
+```
+pip3 install meshtastic
+```
+
+then run the following python3 code:
+
+```
+import meshtastic
+
+interface = StreamInterface() # By default will try to find a meshtastic device, otherwise provide a device path like /dev/ttyUSB0
+interface.sendData("hello world")
+```
+
 For the rough notes/implementation plan see [TODO](./TODO.md).
+
+## Command line tool
+
+This pip package will also install a "meshtastic" commandline executable, which displays packets sent over the network as JSON and lets you see serial debugging information from the meshtastic devices. The source code for this tool is also a good [example](./meshtastic/__main__.py) of a 'complete' application that uses the meshtastic python API.