Add post install

CloudronManifest.json

@@ -31,5 +31,6 @@
     "https://gogs.io/img/screenshots/5.png"
   ],
   "tags": [ "version control", "git", "code hosting", "development" ],
-  "changelog": "file://CHANGELOG"
+  "changelog": "file://CHANGELOG",
+  "postInstallMessage": "POSTINSTALL.md"
 }

DESCRIPTION.md

@@ -6,17 +6,6 @@ This app packages Gogs 0.9.71.
 
 The goal of this project is to make the easiest, fastest, and most painless way to set up a self-hosted Git service.
 
-### Accounts
-
-This app integrates with the Cloudron SSO. Admins on Cloudron automatically become admins on Gogs.
-
-If you want to disable Cloudron SSO, do the following:
-* Admin Panel -> Authentication -> 'cloudron' -> Uncheck 'This authentication is activated'
-* Admin Panel -> Users -> Change Authentication Source to 'Local' and also give a password
-
-You create a `/app/data/app.ini` with any custom configuration. See the 
-[configuration cheat sheet](https://gogs.io/docs/advanced/configuration_cheat_sheet).
-
 ### Features
 
 - Activity timeline

POSTINSTALL.md

@@ -0,0 +1,10 @@
+This app integrates with the Cloudron SSO. Admins on Cloudron automatically
+become admins on Gogs.
+
+If you want to disable Cloudron SSO, do the following:
+* Admin Panel -> Authentication -> 'cloudron' -> Uncheck 'This authentication is activated'
+* Admin Panel -> Users -> Change Authentication Source to 'Local' and also give a password
+
+You create a `/app/data/app.ini` with any custom configuration. See the 
+[configuration cheat sheet](https://gogs.io/docs/advanced/configuration_cheat_sheet).
+