More complete intro to the project.

docs/docs/intro.md

@@ -7,4 +7,27 @@ sidebar_label: Introduction
 ZMK Firmware is an open source (Apache 2.0) keyboard
 firmware built on the [Zephyr Project](https://zephyrproject.com/) RTOS.
 
+The goal is to provider a powerful, featureful keyboard firmware that is free
+of licensing issues that prevent upstream bluetooth support as a first-class
+feature.
 
+## Features
+
+At this point, ZMK is _missing_ more features than it has. Currently, the mostly working bits
+include:
+
+- HID Over GATT (HOG) - This is the official term for Bluetooth Low Energy HID devices.
+- Keymaps and layers with basic keycodes.
+- Somem initial work on one "action", Mod-Tap.
+- Basic HID over USB - This somehow _conflicts_ with BLE at least on the stm32wb55rg dev kit, so investigation needed.
+
+## Missing Features
+
+- Consumer Key Support (play/pause, etc)
+- One Shot
+- Layer Tap
+- Split support
+- Encoders
+- Battery reporting
+- Low power mode.
+- Shell over BLE