Add status.

Author: thejpster

README.md

@@ -1,4 +1,16 @@
 # Neotron OS
 
-This is the Neotron OS. It will run on any system which can execute ARM Thumb v7-M instructions, and has an implementation of the Neotron BIOS.
+This is the Neotron OS. It will run on any system which can execute ARM Thumb v7-M instructions, and has an implementation of the [Neotron BIOS](https://github.com/neotron-compute/Neotron-BIOS).
+
+## Status
+
+This OS is a work in progress. We intend to support:
+
+* [ ] Text mode console (on both text and bitmap displays)
+* [ ] Starting a command-line shell application
+* [ ] Executing applications from RAM
+* [ ] MBR/FAT32 formatted block devices with standard open/close/read/write file semantics
+* [ ] Basic networking
+* [ ] Music playback
+* [ ] Various keyboard layouts