Added example of blacklisting a continent.

Author: TheMihle

README.md

@@ -41,6 +41,22 @@ Follow these steps to enable the dbip mod:
         if ($lan-ip = yes) { set $geo-whitelist yes; }
         if ($geo-whitelist = no) { return 404; }
 
+        location / {
+    ```
+   Or for blacklist with both some countries and continents: 
+    ```nginx
+    server {
+        listen 443 ssl;
+        listen [::]:443 ssl;
+
+        server_name some-app.*;
+        include /config/nginx/ssl.conf;
+        client_max_body_size 0;
+
+        if ($lan-ip = yes) { set $geo-blacklist yes; }
+        if ($geo-blacklist = no) { return 404; }
+        if ($continent-blacklist = no) { return 404; }
+
         location / {
     ```
 6. Restart the container to apply the changes.

root/defaults/dbip.conf

@@ -19,6 +19,14 @@ map $geoip2_data_country_iso_code $geo-blacklist {
     # GB no;
  }
 
+# Continents:
+
+ map $geoip2_data_continent_code $continent-blacklist {
+    default yes;
+    # Example blacklisting a continent, uncomment the blacklisted continent bellow
+    # SA no; # South America
+}
+
 geo $lan-ip {
     default no;
     10.0.0.0/8 yes;