message: Add documentation on https option for watch-client.
diff: @@ -609,6 +609,7 @@ task('client/watch-app', {
  'src/',
  'node_modules/my-es2015-dependency'
  ],
  + https: false,
  host: 'localhost',
  port: 8080,
  hotReloading: true
  @@ -621,6 +622,16 @@ To finally run this task use the following command.
  $ bot watch-client
  ```
  +Optionally, you can use `https` instead of `http`. If you set the `https` property to `true`, roboter will use a self-signed certificate. To specify a custom certificate, use the following syntax:
  +
  +```javascript
  +https: {
  + cert: fs.readFileSync('/.../certificate.pem'),
  + key: fs.readFileSync('/.../privateKey.pem'),
  + cacert: fs.readFileSync('/.../caCertificate.pem')
  +}
  +```
  +
  If you use vi you have to set the following configuration value for the watch mode to work.
  ```bash
  