Adding route /grammar to nginx to serve the grammar file.

nginx.conf

@@ -3,4 +3,11 @@ server {
         include uwsgi_params;
         uwsgi_pass unix:/tmp/ccgapp.sock;
     }
+
+    location /grammar {
+        alias /OpenCCG.ebnf;
+        add_header Content-Disposition 'inline; filename="OpenCCG.ebnf"';
+        default_type text/plain;
+        charset utf-8;
+    }
 }