feat: enable http2 (#269)

Author: nimish-ks

nginx/default.conf

@@ -1,6 +1,6 @@
 server {
     listen 80;
-    listen 443 ssl;
+    listen 443 ssl http2;
 
     ssl_certificate /etc/nginx/ssl/nginx.crt;
     ssl_certificate_key /etc/nginx/ssl/nginx.key;