add example configuration to readme

README.md

@@ -1,2 +1,29 @@
 # hass-asterisk
 Home Assistant platform for Asterisk integration
+
+
+##### Example configuration
+
+```
+asterisk_ami:
+  host: localhost
+  username: admin
+  password: correcthorsebatterystaple
+  monitor:
+  - 100
+  - 101
+  - 102
+```
+
+The platform requires a matching entry in Asterisk's manager.conf or similar. For example:
+
+```
+[admin]
+secret = correcthorsebatterystaple
+deny=0.0.0.0/0.0.0.0
+permit=127.0.0.1/255.255.255.0
+read = system,call,log,verbose,command,agent,user,config,command,dtmf,reporting,cdr,dialplan,originate,message
+writetimeout = 5000
+```
+
+TODO: Confirm which permissions are actually needed