WIP #1: Rename function + add test

Attempt to address #2 

It appears the 2 word tests are only supported with a custom Node_Test class.
Will try to change that later this week.

### Todo
- [x] Create custom Node_Test class to allow for 'active feature' as test
- [ ] Update README
- [ ] More tests...
Yeah, I never expected to get my current solution to be merged :-) Was just playing with it and wanted to know if there are alternatives.
I guess retrieving the extension will have to do for now, thanks!