Update 'README.md'

README.md

@@ -82,7 +82,10 @@ server {
         # Replace 9067 with the port of your gRPC server if using a custom port
         # Hush Smart Chains should use a different port than 9067 so it doesn't conflict with HUSH lightwalletd
         # NOTE: it's only safe to use --no-tls on lightwalletd if this is on localhost
-    	grpc_pass grpc://localhost:9067;
+        grpc_pass grpc://localhost:9067;
+        proxy_redirect off;
+        proxy_set_header Host $host;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
     }
 }
 ```
@@ -93,6 +96,13 @@ Then run the lightwalletd frontend with the following:
 ./start.sh
 ```
 
+If you see the following error `"Can't create data directory: /var/lib/lightwalletd"` you need to set the correct user permissions:
+
+```
+sudo chown -R $USER:$USER /var/lib/lightwalletd
+sudo chmod -R 755 /var/lib/lightwalletd
+```
+
 Note: we use the "--no-tls" option as we are using NGINX as a reverse proxy and letting it handle the TLS authentication for us instead. If you want to do TLS directly with lightwalletd with no reverse proxy, see the next section.
 
 If you encounter an error about the lightwalletd "data directory", then set one on the command line with `--data-dir` (OR) create the `/var/lib/lightwalletd` and `/var/lib/lightwalletd/db` directories & chown that new db directory as the user account running lightwalletd and hushd.