to make this a complete guide I would like to add how you could setup your https server as well:
server {
listen 443 ssl;
root /var/www/yourpath;
index index.php index.html index.htm;
# Make site accessible from http://localhost/
server_name yourdomain.com www.yourdomain.com;
# if you are using hhvm, otherwhise include your standard php config or whatever
include hhvm.conf;
location / {
try_files $uri $uri/ /index.php$is_args$args;
}
ssl on;
ssl_certificate /etc/letsencrypt/live/yourdomain.com/cert.pem;
ssl_certificate_key /etc/letsencrypt/live/yourdomain.com/privkey.pem;
ssl_stapling on;
ssl_stapling_verify on;
ssl_trusted_certificate /etc/letsencrypt/live/yourdomain.com/fullchain.pem;
ssl_session_timeout 5m;
}