README.md

Unofficial fork of godot 3, mostly to have a smaller repo to work with.

The upstream README.md is now here.

Branches:

• godot: Godot stable releases as they come from upstream, but without commit histories.
• frt: Minor changes to the godot branch to unlock features and avoid hacks when compiling frt. diff
• master: Might be used for something more interesting later. Right now, a more helpful landing page.