Reduce size of README

[dbeatty10]

Currently, the README is a giant wall of text that is intimidating to me.

As a user, I always appreciate the main focus to be install instructions that help me get hands-on. Everything else is a distraction from that goal, in my opinion.

What good looks like

• minimum prerequisites
  • minimum software to install
  • minimum skills/knowledge required
• the user can quickly find all the commands they need to run
  • the relevant commands don't need to be fished out from the middle of sentences (see example below)
• work for the greatest number of users
  • instructions that are cross-platform (zsh, PowerShell, etc)
• ideally fits on a single page

Example of fishing out relevant commands

• pip upgrade command needs to be fished out from here
• Should just be a stand-alone line that says this instead:

  pip install --upgrade pip