uberSpark Documentation Suggestion

It might be beneficial to add a note early on in the uberspark documentation about the software requirements giving a rough estimate of the disk space required. As the required dependencies require multiple GBs of disk space.

@Cap, can you give me an estimate of the disk space (in GB) in your case? I can amend the documentation as part of task:

Hey @cap,

I created a task thread for the documentation refinement on the installation walkthrough:

Let us move the discussion on the general user guide installation walkthrough issues there. And
maybe you can just do a PR with all your suggested changes once you are through.

Thanks!