[Keyboard] Refactor atom47 and add rev4 and rev5 (#13201)

Co-authored-by: Nick Brassel <nick@tzarc.org>

keyboards/evyd13/atom47/readme.md

@@ -3,24 +3,13 @@
 ![Atom47](https://i.imgur.com/Wwflqvt.png)
 
 ## Support
-Keyboard Maintainer: [Evyd13](https://github.com/evyd13)  
-Hardware Supported: Atom47 rev2/rev3
-Hardware Availability: [GeekHack.com Group Buy](https://geekhack.org/index.php?topic=93447.msg2545221)  
-
-
-## Features (rev3 and up)
-- QMK Firmware  
-- 6 Underglow RGB leds  
-- In-switch leds  
-- Through-hole micro usb connector (less likely to break off!)  
-- South facing leds for the QMX/Zealencio users  
-- Multiple layouts  
-- Easily reachable reset button under the spacebar  
-- CapsLock indicator  
+* Keyboard Maintainer: [Evelien Dekkers](https://github.com/evyd13)
+* Hardware Supported: Atom47 rev2/rev3/rev4/rev5
+* Hardware Availability: [Open source on GitHub](https://github.com/evyd13/atom47)
 
 ## Build
-To build the default keymap for the latest revision, simply run `make atom47:default`. Specifiy the revision like so: `make atom47/rev3:default`.
+Make example for this keyboard (after setting up your build environment):
 
-See [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) then the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information.
+    make evyd13/atom47/rev5:default
 
-![Atom47](https://i.imgur.com/JfYnOba.jpg)
+See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs).