Add docs for lightwalletd with HSCs and for --http-bind-addr

README.md

@@ -117,6 +117,29 @@ cargo build --release
 
 * If you have trouble compiling silentdragonlite-cli, then [please refer to it's separate documentation here](https://git.hush.is/hush/silentdragonlite-cli) on how to build it and what pre-requisites need to be installed.
 
+## Running a server for Hush Smart Chains
+
+This lightwalletd code can be used with any Hush Smart Chain. For example, here is how you would
+run the lightwalletd for DragonX :
+
+```
+./lightwalletd --grpc-bind-addr localhost:9069 --http-bind-addr localhost:9070 --hush-conf-path ~/.hush/DRAGONX/DRAGONX.conf --no-tls --rpcport=21769
+```
+
+For this code, your Nginx config will need to use the same GRPC port, so something like `grpc_pass grpc://localhost:9069;`
+
+The above code should be compatible with running a lightwalletd on the same server that runs one for Hush, which by default uses ports 9067 for grpc
+and 9068 for http. If you are only running a single lightwalletd on a server, the following should work for DragonX :
+
+```
+./lightwalletd --grpc-bind-addr localhost:9069 --http-bind-addr localhost:9070 --hush-conf-path ~/.hush/DRAGONX/DRAGONX.conf --no-tls --rpcport=21769
+```
+
+To run lightwalletd for other HSC's, you must specific the correct RPC port via `--rpcport` , point to it's config file via `--hush-conf-path` and
+use use unique ports that nothing else is using for `--grpc-bind-addr` and `--http-bind-addr` . Make sure your nginx config `grpc_pass` port matches
+what you give to `--grpc-bin-addr` .
+
+
 ## Lightwalletd Command-line Options
 
 These are some of the most used command line options for lightwalletd:
@@ -124,7 +147,8 @@ These are some of the most used command line options for lightwalletd:
 
 | CLI option | Default                   | What it does                  |
 |------------|:--------------:|------------------------------:|
-| --grpc-bind-addr | 127.0.0.1:9067 | address and port to listen on |
+| --grpc-bind-addr | 127.0.0.1:9067 | address and port to listen on via GRPC |
+| --http-bind-addr | 127.0.0.1:9068 | address and port to listen on vi HTTP |
 | --tls-cert  | blank             | the path to a TLS certificate |
 | --tls-key   | blank             | the path to a TLS key file    |
 | --no-tls    | false             | Disable TLS, serve un-encrypted traffic |