add sef configuration example

example/environment/nginx

@@ -11,7 +11,7 @@ server {
 	server_name _;
 
 	location / {
-		try_files $uri $uri/ =404;
+		try_files $uri $uri/ =404 @yggtracker;
 	}
 
 	location ~ \.php$ {
@@ -22,4 +22,8 @@ server {
 	location ~ /\. {
 		deny all;
 	}
+
+	location @yggtracker {
+		rewrite ^/(.*)$ /index.php?$1 last;
+	}
 }