Keyboard: Vinta (#4283)

* added initial config files for vinta

* added readme

* changed product id and device ver

* fixed keymap illustration

* updated rules.mk to enable more commands

* removed a bunch of pre-code text; changed some grammar woopsies

* removed bootmagic lite

* updated developer's note

* updated readme.md

keyboards/vinta/readme.md

@@ -0,0 +1,22 @@
+Vinta
+=========
+
+[Vinta](https://i.imgur.com/huX3lff.jpg)
+
+
+This is an ARM-powered 65% keyboard PCB with USB Mini B connector and breakout for optional RGB underglow.
+
+Keyboard Maintainer: [Peioris](http://peioris.space/) and on [github](https://github.com/coarse)  
+Hardware Supported: Vinta with STM32F042K6T6  
+Hardware Availability: Private Groupbuy (will post on Reddit once QMK has RGB underglow working)
+
+Make example for this keyboard (after setting up your build environment):
+
+    make vinta:default
+
+See [build environment setup](https://docs.qmk.fm/build_environment_setup.html) then the [make instructions](https://docs.qmk.fm/make_instructions.html) for more information.
+
+#### Developer's Note
+
+STM32F042xx chips does not allow jumping to bootloader without BOOT0 being set to high, therefore it is impossible to enter the bootloader from sending a `RESET` keycode nor using bootmagic or bootmagic lite.  
+The only way to enter bootloader is to hold the BOOT0 button while the keyboard is powering up or after a power reset (done by pressing the reset switch or sending a `RESET` keycode).