Add license and contributing files. (#83)

Author: microbit-matt-hillsdon

CONTRIBUTING.md

@@ -0,0 +1,13 @@
+Thanks for looking here! We'd love your help. The micro:bit project is only
+possible through contributions of companies and individuals around the world.
+
+This project is managed on GitHub, and the best way to contribute is to jump in
+and fix/file issues.
+
+https://github.com/microbit-foundation/micropython-microbit-v2-simulator
+
+Significant features are best discussed first to make sure everyone is agreed
+on the best direction.
+
+The project uses [Prettier](https://prettier.io/) to format TypeScript code so
+please check out their documentation and set it up with your code editor.

LICENSE

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2022 Damien P. George, Micro:bit Educational Foundation
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

README.md

@@ -7,6 +7,12 @@ To try the simulator use the [micro:bit Python Editor](https://python.microbit.o
 The rest of this page explains how to embed the simulator in an application
 and develop the simulator software.
 
+## License
+
+This software is under the MIT open source license.
+
+[SPDX-License-Identifier: MIT](LICENSE)
+
 ## Embedding
 
 The simulator is designed to be embedded into other web applications