Added more readme doc

README.md

@@ -4,4 +4,19 @@ protean-service aims to be a Virtual Table Top Role Playing Game engine powered
 table top application, it also aims to help with collaboration, a way to tell a visually and audially enhanced
 story.
 
-The first iteration of the service will also contain a playable story
+The first iteration of the service will also contain a playable story and helpers for solo style play.  It uses
+the protean engine which is a role playing game engine designed for both table top and computer role playing  games.
+The name protean comes from the Greek God Proteus, and means being able to taje many forms.
+
+The service will be composed of several pieces:
+
+- backend: for multiplayer, allows players to connect and maintains shared state of the world
+- frontend: a bevy game engine which the player will interact with to control the character and get info on the world
+- protean-lib: the base game engine that the frontend will use.  It contains the kernel to which plugins attach
+- protean-plugins: adds new rules
+
+## protean game engine
+
+The heart of protean-service will be protean-lib that actually defines the base system.  It is designed to be modular, so
+that it is very minimal but can be extended easily.  All the "rules" will actually be defined in plugins, which add or
+implement base traits.  It will also be dynamic, and allow hot plugging via webassembly modules.