Update README.md

Author: jhades

README.md

@@ -61,11 +61,35 @@ To run the frontend part of our code, we will use the Angular CLI:
 
     npm start 
 
-The application is visible at port 4200, but you need to use HTTPS - [https://localhost:4200](https://localhost:4200)
+The development application is visible at port 4200  - [http://localhost:4200](http://localhost:4200), but in this course we will be mostly running the application production mode.
 
-This application uses a self-signed certificate, so you will need to accept it using the browser. If you are using Chrome, you will need to click Advanced and then choose "Proceed to localhost".
+# Running the application in production mode, with the service worker active
 
-# Important 
+In order to build the application in production mode, we use this command:
+
+    ng build --prod
+    
+This is going to output the production application in the dist folder, with the service worker active. To run the application we will need an HTTP server, so let's install http-server:
+
+    npm install -g http-server
+    
+We can then run the production application by doing:
+
+    cd dist
+    http-server -c-1 .
+    
+And now the production application should be available at port 8080 - [http://localhost:8080](http://localhost:8080). 
+
+> Note: Please check in the server startup log to see what port is http-server  using. By default its 8080, but it that port is busy then 8081 will used, etc.
+
+# Shortcut command for building the application in production mode
+
+We will be building the application often in production mode. This shortcut command will build the application in production mode and start http-server all in one go:
+
+    npm run start:prod 
+
+
+# Getting the code at the beginning of each section
 
 This repository has multiple branches, have a look at the beginning of each section to see the name of the branch.