Update README.md (#16)

* Update README.md

+ added feature, todo and goals section.

* Update README.md

README.md

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-# rust-chat-server
+# Rust-chat-server
+
+A Chat server writen in rust to allow communication between peers.
+
+---
+
+## Features:
+- implemented:
+  - json based API.
+  - Server introspection.
+  - Peer discovery.
+  - sending messages to connected clients.
+  - 
+- todo:
+  - Encryption to server.
+  - server to server meshing.
+  - asynchronous client managment instead of threaded approach.
+
+## Goals:
+- Learn the rust programming lanaguage.
+  - Ownership: how that affects normal programming styles.
+  - Borrowing and references: how this affects shared state.
+  - Lifetimes: how this affects data retention and sharing.
+- Learn how to create networked programs.
+  - Application level protocol: how to get two programs to communicate via TCP sockets.
+  - Socket handling: Discovering ways to handle multiple socket connections without affecting performance.
+- Learn common encryption protocols.
+  - Adding support for encrypted sockets.
+  - Pros and cons of symetric and asymetric encryption.
+  - resolving common encryption flaws
+
+> Questions: For questions please add a issue with the question label. It will eventually be responded to