Added a very basic README

README.md

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+# codemp
+This project is heavily inspired by Microsoft Live Share plugin for Visual Studio (Code).
+While the functionality is incredibly good, I often find issues or glitches which slow me down, and being locked to only use Visual Studio products is limiting.
+I decided to write my own solution, and to make it open source, so that any editor can integrate it with a plugin.
+
+# Design
+## Client/Server
+While initially a P2P system seemed interesting, I don't think it would easily scale with many users (due to having to integrate many changes on each client).
+I decided to build a client/server architecture, with a central "Workspace" managed by the server application and multiple clients connecting to it.
+Each client will only have to care about keeping itself in sync with the server (remembering local-only changes and acknowledged changes), leaving the task of keeping track of differences to the server.
+
+## Plugins
+This software will probably be distribuited as a standalone binary that editors can use to connect to a "Workspace". A dynamic library object might also be a choice.
+Each editor plugin must be responsible of mapping codemp functionality to actual editor capabilities, bridging codemp client to the editor itself. The client should be able to handle a session autonomously.
+
+## Text Synchronization
+A non destructive way to sync changes across clients is necessary.
+I initially explored CRDTs, but implementation seemed complex with little extra benefits from "more traditional" approaches (Operational Transforms).
+This has to be investigated more.
+
+# Roadmap
+* [x] Initial design choices
+* [x] Simple GRPC server with tonic
+* [x] Simple neovim client with RPC/msgpack
+* [ ] Implementing core protocol routes
+* [ ] Simple neovim client capable of displaying other person cursor
+* [ ] Implement OTs / CRTDs for sharing file deltas
+* [ ] More clients (VSCode? JetBrains IDEs?)
+* [ ] LSP functionality bridged to guests from host?
+* [ ] Full remote development suite by keeping the project repo on a server?