Add license info to README, add CONTRIBUTING and CONTRIBUTORS files. (#16)

Author: microbit-carlos

CONTRIBUTING.md

@@ -0,0 +1,10 @@
+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/microbit-fs
+
+If you're interested in working on any of these items, please file an issue
+and mention @microbit-carlos.

CONTRIBUTORS.md

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+Thank you to everybody that has contributed to the microbit-fs project:
+
+Carlos Pereira Atencio ([email protected])
+Ross Lowe ([email protected])
+Matt Hillsdon ([email protected])

README.md

@@ -1,10 +1,18 @@
 # micro:bit MicroPython Filesystem
 
-A TypeScript library to manipulate the micro:bit filesystem.
+A TypeScript library to manipulate the micro:bit MicroPython filesystem.
 
 <img width="50%" alt="microbit-fs logo" src="https://user-images.githubusercontent.com/29712657/53014294-fb95e700-343f-11e9-856e-d70af8870c0c.png">
 
-This library is a Work In Progress. At the moment only the MicroPython filesystem within a hex file is supported.
+This library is a Work In Progress. At the moment only the MicroPython
+filesystem within a hex file is supported.
 
 Raw draft of the docs can be found in
 [https://microbit-foundation.github.io/microbit-fs/](https://microbit-foundation.github.io/microbit-fs/).
+
+
+## License
+
+This software is under the MIT open source license.
+
+SPDX-License-Identifier: MIT