Added support upload file size setting.

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>

nginx/nginx.conf

@@ -15,6 +15,7 @@ http {
   tcp_nodelay on;
   keepalive_timeout 15;
   types_hash_max_size 2048;
+  client_max_body_size 20M;
   include /etc/nginx/mime.types;
   default_type application/octet-stream;
   access_log on;