chore: initial documentation of config.json (#627)

README.md

@@ -1,3 +1,8 @@
 # Space Ninja Server
 
 More information for the moment here: [https://discord.gg/PNNZ3asUuY](https://discord.gg/PNNZ3asUuY)
+
+## config.json
+
+- `logger.level` can be `fatal`, `error`, `warn`, `info`, `http`, `debug`, or `trace`.
+- `myIrcAddresses` can be used to point to an IRC server. If not provided, defaults to `[ myAddress ]`.

config.json.example

@@ -2,8 +2,7 @@
   "mongodbUrl": "mongodb://127.0.0.1:27017/openWF",
   "logger": {
     "files": true,
-    "level": "trace",
-    "__valid_levels": "fatal, error, warn, info, http, debug, trace"
+    "level": "trace"
   },
   "myAddress": "localhost",
   "httpPort": 80,