Update README.md

Author: Vinil-D

node-expressjs/README.md

@@ -9,9 +9,10 @@
    2. Select Node.js (express.js) as the type
    3. Click Create New API Key
 4. Copy the resulting API key string to the clipboard
-5. Set the environment variable `DARKSPARK_API_KEY` to the copied value
-6. Run `npm install`
-7. Run `npm start`
+5. Open Terminal, cd to BASE/node-expressjs
+6. Set the environment variable `DARKSPARK_API_KEY` to the copied value using following command: export DARKSPARK_API_KEY = <insert key here>
+7. Run `npm install`
+8. Run `npm start`
 
 The final two steps can be done in one command via:
 
@@ -20,6 +21,7 @@ DARKSPARK_API_KEY=<insert key here> npm start
 ```
 
 An expressjs webserver will start on port 3000. All accesses to this server will be observed by Darkspark.
+   Browse to 'http://localhost:3000/api-doc'
 
 ## Postman Collection