überSpark: Automatic installation root-dir discovery within front-end CLI

Automatically discover root-directory of überSpark installation when using the front-end CLI

Linked PR:

@Cap, can you give the installation a whirl to make sure it still works for you on Ubuntu?

I tested on my WSL environment and all is good.

Thanks!

All good in ubuntu 16.04 VM.

Thanks @Cap. I have fixed the --version output as mentioned in your review comments.

PR merged:

Closing task topic. Thanks!