add nginx example config

examples/nginx/travelynx.conf

+upstream travelynx {
+        server 127.0.0.1:8093;
+}
+
+server {
+        listen   [::]:80;
+        listen   0.0.0.0:80;
+
+        server_name travelynx.de;
+        access_log /var/log/nginx/de.travelynx.log anonip;
+
+        rewrite ^/(.*)$ https://travelynx.de/$1 permanent;
+}
+
+
+server {
+        listen [::]:443;
+        listen 0.0.0.0:443;
+
+        server_name travelynx.de;
+        access_log /var/log/nginx/de.travelynx.log anonip;
+
+        location /static {
+                expires 1y;
+                root /srv/www/travelynx/public;
+        }
+
+        location /service-worker.js {
+                expires 1d;
+                root /srv/www/travelynx/public;
+        }
+
+        location / {
+                proxy_pass http://travelynx;
+                proxy_http_version 1.1;
+                proxy_set_header Host $host;
+                proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+                proxy_set_header X-Forwarded-Proto "http";
+        }
+}