Walkthrough/Setup needed in Readme

Some things you need to do to set this up:
* (Beaker Browser) Seed Ridder
* Then Fork Ridder
* ...
* (Locally) Go to dat://.../reader on your Ridder copy in your Library
* Accept access from whatever feeds you want to browse from your Ridder
* (on Ridder) Go to the Sources tab & add your feeds