Update readme with e2e info

Author: maximegris

Diff for: README.md

@@ -44,25 +44,40 @@ npm install -g @angular/cli
 
 ## To build for development
 
-**in a terminal window** -> npm start  
-**in another terminal window** -> npm run electron:serve
+- **in a terminal window** -> npm start  
+- **in another terminal window** -> npm run electron:serve
 
 Voila! You can use your Angular + Electron app in a local development environment with hot reload !
 
 The application code is managed by `main.js`. In this sample, the app runs with a simple Electron window and "Developer Tools" is open.  
 The Angular component contains an example of Electron and NodeJS native lib import. See [Use NodeJS Native libraries](#use-nodejs-native-libraries) charpter if you want to import other native libraries in your project.  
 You can desactivate "Developer Tools" by commenting `win.webContents.openDevTools();` in `main.js`.
 
-## To build for production
+## Browser mode
+
+Maybe you want to execute the application in the browser ? You can do it with `npm run start:web`.  
+Note that you can't use Electron or NodeJS native libraries in this case. Please check `providers/electron.service.ts` to watch how conditional import of electron/Native libraries is done.
 
-* Using development variables (environments/index.ts) :  `npm run electron:dev`
+## To build for production
 
-* Using production variables (environments/index.prod.ts) :  `npm run electron:prod`
+- Using development variables (environments/index.ts) :  `npm run electron:dev`
+- Using production variables (environments/index.prod.ts) :  `npm run electron:prod`
 
 Your built files are in the /dist folder.
 
+## Execute E2E tests
+
+You can find end-to-end tests in /e2e folder.
+
+Before executing e2e scripts, you may need to update drivers libraries : `npm run pree2e`
+
+You can now execute tests with the command lines below : 
+- **in a terminal window** -> First, start a web server on port 4200 : `npm run start:web`  
+- **in another terminal window** -> Then, execute Protractor : `npm run e2e`
+
 ## Included Commands
 
+- `npm run start:web` - Execute the app in the brower
 - `npm run electron:linux` - builds your application and creates an app consumable on linux systems.
 - `npm run electron:windows` - On a Windows OS, builds your application and creates an app consumable in windows 32/64 bit systems.
 - `npm run electron:mac` - On a MAC OS, builds your application and generates a `.app` file of your application that can be run on Mac.