Added stanleylai's personal keymap (#420)

* Added WS2812 support for KC60

* Reorganized WS2812 support into its own keymap

* Fixed relative link in README

* Moved WS2812 mention in README to the bottom

* Fixed titling in WS2812 README

* Reverted KC60 Makefile and default keymap back

* Moved RGB specific config.h to ws2812 keymap folder

* Added my personal keymap

* Updated compiled hex

* Reverted KC60 files to 3f6fac47 before pull request #419

keyboard/kc60/keymaps/stanleylai/README.md

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+Stanley Lai's Split Right Shift with Dedicated Arrow Keys
+======================
+
+![Image of KC60 with RGB Underglow](../ws2812/ws2812_example.jpg)
+
+## Quantum MK Firmware
+For the full Quantum feature list, see [the parent README.md](/README.md).
+
+## Keymap Notes
+- Keymap setup with split Right Shift in mind.
+- Right-side modifiers are setup as dedicated arrow keys
+
+### Base Layer Reference
+- Fn Layer indicated on keycap front legends.
+- Tapping Caps Lock key toggles Caps. Holding it down momentarily switches us to the Fn Layer.
+- Holding down "Fn" and "Page Down" momentarily switches us to the RGB Layer. Tapping "Page Down" behaves as expected.
+![Base Layer](base_layer.jpg)
+
+### RGB Layer Reference
+![RGB Layer](rgb_layer.jpg)
+
+## WS2812 Support
+By default, it is now setup for 16 LEDs on the PF5 breakout pin. See [included image](../ws2812/ws2812_wiring.jpg) for wiring reference.
+
+### Build
+To build this keymap, simply run `make KEYMAP=stanleylai`.