Update README.md for the Go backend

README.md

@@ -4,6 +4,9 @@ This repository contains a small proof of concept implementation of browser
 based PKCS#10 certificate signing request and PKCS#12 key store generation
 using [node-forge](https://github.com/digitalbazaar/forge).
 
+The backend is implemented in [Go](https://golang.org/) and utilizes openssl
+for the signing operations.
+
 ## Running
 
 1. Clone the repository
@@ -21,13 +24,21 @@ using [node-forge](https://github.com/digitalbazaar/forge).
     gulp
     ```
 
-3. Run a Python web server with the generated resources
+2. Setup the example CA and a server certificate and key
+
+    ```
+    ./setup_example_ca.sh
+    openssl req -new -x509 -days 365 -subj "/CN=localhost" -addext subjectAltName=DNS:localhost -newkey rsa:3072 \
+      -nodes -out server.crt.pem -keyout server.key.pem
+    ```
+
+3. Run the Go based backend
 
     ```
-    python3 -m http.server -d public
+    go run main.go
     ```
 
-    Open http://localhost:8000/ in your browser.
+    Open https://localhost:8000/ in your browser.
 
 4. Run gulp watch