Update to latest core library. Output errors for config and log.

README.md

@@ -20,3 +20,23 @@ To build:
 ```
 go build
 ```
+
+## Use
+
+The settings filename is hard-coded to `Settings.yaml` and is created on the first run. Please see the core library for individual settings to change.
+
+Simply start it and then use the listed commands:
+
+```
+C:\Peernet\Cmd>Cmd
+Peernet Cmd 0.1
+------------------------------
+Please enter a command:
+help               Show this help
+net list           Lists all network adapters and their IPs
+status             Get current status
+chat               Send text to all peers
+peer list          List current peers
+debug key create   Create Public-Private Key pair
+debug key self     List current Public-Private Key pair
+```