Add example for manual script with https flag.

Ref #592

Author: SpaceK33z

examples/modus-manual-script/README.md

@@ -6,8 +6,16 @@ node ../../bin/webpack-dev-server.js --open
 
 The webpack-dev-server client is added as script tag to the html page.
 
+```shell
+node ../../bin/webpack-dev-server.js --open --https
+```
+
+This will do the same, but connect over https.
+
 ## What should happen
 
 Try to update app.js by uncommenting some lines. The browser should reflect your changes.
 
 If there is a compilation error or warning, this should be displayed in the CLI and devtools.
+
+For the `--https` variant, it should do the same. Make sure to test this when making changes to how the websocket URL is parsed.