start with user favicon/locale personalization

docs/settings.md

@@ -6,11 +6,23 @@ nav_order: 3
 ---
 
 # Settings
+Main `gancio` configuration is done with a configuration file.
+This shoud be a `.json` or a `.js` file and could be specified using the `--config` flag.
+
+- <small>eg. `gancio start --config ./config.json'</small>
+- <small>eg. `pm2 start gancio start -- --config ~/config.json'</small>
+
+Default configuration 
 {: .no_toc }
 
 1. TOC
 {:toc}
 
+
+#### Title
+####
+
+
 ## Default settings
 ```json
 {
@@ -26,6 +38,7 @@ nav_order: 3
     "storage": "/tmp/db.sqlite"
   },
   "upload_path": "./",
+  "favicon": "../dist/favicon.ico",
   "smtp": {
     "auth": {
       "user": "",