Update Nginx config

* Make only Let's Encrypt path available on port 80
* Protect WordPress admin URLs
* Seperate logs for hosts
* Update example PHP config
* Update README

conf/nginx/sites-available/redirect-ssl-all

@@ -1,5 +1,5 @@
 server {
-	server_name *.example.com;
+	server_name .example.com;
 
 	listen 80;