📝 Add documentation for the website config options

Signed-off-by: Marcus Fihlon <[email protected]>

README.md

@@ -87,6 +87,28 @@ METANET_DATABASE_PASSWORD=verysecred
 
 When these settings are not blank, the import will start automatically ten seconds after the launch of *Komunumo*. 
 
+### Website
+
+Every website needs some basic configuration. Have a look at the following configuration options, most of which are self-describing:
+
+```
+WEBSITE_URL=http://localhost:8080
+WEBSITE_ASSOCIATION=User Group Name
+WEBSITE_ABOUT_TEXT=Tell the world what this user group is about.
+WEBSITE_CONTACT_ADDRESS=12345 Foobar
+WEBSITE_CONTACT_EMAIL=noreply@localhost
+WEBSITE_COPYRIGHT=© User Group Name
+WEBSITE_LOGO_TEMPLATE=http://localhost/images/logo_%02d.png
+WEBSITE_LOGO_MIN=1
+WEBSITE_LOGO_MAX=10
+```
+
+[!NOTE]
+> The configuration option `WEBSITE_ABOUT_TEXT` is allowed to contain HTML code! So you can use paragraphs and links, if needed.
+
+[!IMPORTANT]
+> The logo handling is very special: If you want to specify only one logo, just use the URL and set the `MIN` and `MAX` values to `0`. Done. But if you want *Komunumo* to pick a random logo on every request, you can specify a logo template which must contain a String format argument for a decimal integer representation (like `%02d` for a two-digit number in the example above). In addition, set the `MIN` and `MAX` values as needed. *Komunumo* will randomly pick a number between the provided `MIN` and `MAX` values and merge it with the provided `TEMPLATE` to create the image URL.
+
 ## Build
 
 ### Maven