README, keymap & config update to 3 keyboards (#1911)

README, keymap & config update to 3 keyboards (#1911)

* First commit of the Terminus_Mini firmware and the DivergeJM version of the Nyquist firmware

* Fix terminus_mini & nyquist/DivergeJM readme files

Previously an outdated copy of the default readme. Updated to match the  Nyquist/DivergeJM format (DivergeJM is a split 5x12 implementation of the terminus_mini layout)

* Update makefiles to rules.mk

Renamed both Makefiles to rules.mk, removed references to makefiles

* Updated rules.mk

Inadvertantly removed important code from the rules.mk in previous commit. This has been restored.

Also disabled Tap_Dance in both rules.mk files

* Moved terminus_mini to handwired

Realised that existing directory was not appropriate for the terminus_mini project, moved to handwired.

* New Frosty Flake layout for QFR TKL

Added a TKL layout for the Frosty Flake with a navigation cluster on LOWER under the left hand and a similarly functioning MOUSE layer that includes mouse navigation functionality.

* README fix & keymap update for 3 keyboards

Fixed the markdown for the handwired/terminus_mini:default, Nyqyist:DivergeJM & frosty_flake:QFR_JM.

Added TAPPING_TERM =  150 to config.h for all keyboards

Switched LT(LOWER) and LAlt on the mod row for ortholinear boards.

* Update readme for QFR_JM to include make instructions

* Revert "Merge branch 'master' of https://github.com/mogranjm/qmk_firmware"

This reverts commit a45f264ada09acc14fb85390407bc7ff5bb021e3, reversing
changes made to 62349c33410671a33d4041d50cf27de1d6bdd9cf.

* Revert "Revert "Merge branch 'master' of https://github.com/mogranjm/qmk_firmware""

This reverts commit eae54fb3be2c60dffd704261f84bab98c9e06f93.

* Added QWERTY support to the QFR_JM

Implemented variable default base layer from the Planck default keymap.

* Update README to reflect QWERTY support