Added Config for Nginx reverse proxy

Reverse-Proxy.md

@@ -1,3 +1,36 @@
+# Linux / OSX
+
+## Prerequisites
+
+- Install Nginx or Apache
+- Optional: have an SSL certificate. A free one can be obtained using ["Let's Encrypt"](https://letsencrypt.org/)
+
+## Nginx Conf
+Nginx is by far, easier to setup a reverse proxy. Depending on your distro, the location of the Nginx conf or access log may be different than what's shown below. Please use these as a guide.
+
+### HTTP (non-SSL)
+Create a new config here: `/etc/nginx/sites-enabled/sonarr.your-domain.xyz`
+With the following contents:
+
+    server {
+        listen         80;
+        server_name    sonarr.your-domain.xyz;
+    
+        location / {
+            proxy_pass        http://127.0.0.1:8989;
+            proxy_set_header  X-Real-IP  $remote_addr;
+            proxy_set_header        Host            $host;
+            proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;
+            proxy_set_header        X-Forwarded-Proto $scheme;
+            proxy_redirect off;
+        }
+        access_log /var/log/nginx/sonarr.your-domain.xyz;
+    }
+
+Reload Nginx: `nginx -s reload`
+
+# Windows
+
 ## Variant 1: Setting the URL base in the UI
 
 1. Go to Settings -> General