Updated for accurate ng usage to allow for proxying and auto-reloading

[HunterGerlach]

The usage of ng serve didn't correctly proxy requests. Also, page didn't automatically refresh on update. Using ng start allows both to occur naturally.

[RahulKwani]

Hi @HunterGerlach,

Is it still valid ? I think @ipassynk wanted to have a simple app for demo purpose, I guess that is why ng start is not supported for this one.

It is supported npm start for all both proxy config