A Rust client (#18)

* Initial commit

The client is currently only capable of registering for play

* Switch to serde for json serialization

* Parse all JSON messages

Or rather all messages sent in the game

* Switch to rust nightly for serde

This mainly solves the whole json parsing problem reasonably well

* Move move logic to snake module

* Add util functions

* Improve error handling in main

* Implement utility functions on map struct

And keep those that do not deal with the map in the util module

* Refactor and improve the maputils

* Add test cases to maputil functions

Also fix the snake panicking due to an incorrect unwrap

* Fix snake panicking due to bad unwrap

Missed staging these in the last commit...

* Add logging

* Add a heart beat to the client

Needs some proper error handling however

* Handle errors properly in main.rs

Also refactor to improve readability

* Print what is happening to console

* Add readme file

Also lock the package versions used and update to latest nightly

.gitignore

@@ -0,0 +1,15 @@
+
+# Created by https://www.gitignore.io/api/rust
+
+### Rust ###
+# Generated by Cargo
+# will have compiled files and executables
+/target/
+
+# Remove Cargo.lock from gitignore if creating an executable, leave it for libraries
+# More information here http://doc.crates.io/guide.html#cargotoml-vs-cargolock
+Cargo.lock
+
+# Ignore logfiles
+/log/
+/src/log/