Add worker_processes auto

Number of worker processes equal to number of CPU cores, instead of default 1.

public/templates/nginx.conf.html

@@ -4,6 +4,7 @@ worker_processes {{ data.worker_processes }};
 worker_rlimit_nofile 409600;
 
 events {
+    worker_processes auto;
 	worker_connections 4096;
 	multi_accept on;
 }