Retrieving Environment Variables for Authentication

[JakeQuilty]

Is your feature request related to a problem? Please describe.

Although you can get manually get the environment variables and assign them to the needed variables to instantiate a Client, it would be nice if there was a built in way to do this like the Java API

Describe alternatives you have considered

Manually grabbing environment variables in the code, but this is an extra step that will have to be replicated for every application made.