[Keymap] UK ISO keymap for DZ60 (#7322)

* New custom ISO keymap for DZ60

* New custom ISO keymap for DZ60

* Adding relative path for keymap image

* Removed reference to PNG and updated the README accordingly.

* Improving on the README some more after reading up on the guidelines for
keymaps

1 files changed, 24 insertions, 0 deletions

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+# DZ60 ISO Keymap
+
+Custom keymap for UK ISO keyboard layouts.
+This includes 3 different layers.
+
+-   Layer 0:
+    -   Standard ISO layout with main modifier key, for accessing layer 1, to the right of the space bar.
+-   Layer 1:
+    -   Layer that gives you access to pretty much everything else like the arrow keys.
+-   Layer 2;
+    -   Standalone layer only for modifying the lighting on the board. Keys for this purpose are mapped in the locations used by the default dz60 layout.
+    -   You can access this layer by holding MO(1) (next to the space bar) followed by holding MO(2) which where the Left Alt key is positioned.
+
+![dz60-iso-keymap](https://i.imgur.com/UV0t6aL.png)
+
+Make the kaymap for this keyboard (after setting up your build environment):
+
+    make dz60:tarnjotsingh
+
+Then flash it by running:
+
+    make dz60:tarnjotsingh:flash
+
+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).