Some revisions to cbbrowne Planck keymap, and a preliminary xd75 keymap (#1715)

* Add HOME/END keys as upper/lower on arrow-up/down

* Reduce .hex file size by turning off unneeded options

* Put digit keypad onto left hand upon RAISE; this will sometimes be preferable to double-hits of right hand

* Latest super latest version merge

* cbbrowne keymap for XD75re

* starting notes on XD75re keymap plans

* First draft of bottom row of QWERTY

* Switch my special bottom line over to QCENT

* Dunno

* Filling in wanted keys, bit by bit...

* Add copyright, extra macro

* Clean up comments, remove some experimental code I didn't like

* TODO plans for xd75re

* clean up keyboard layout

* QCENT2 is my new experiment for the main keyboard...

* Add a few more main layer keys, and modify LOWER to shift things outwards to conform with main layer

* Clean up RAISE layer to conform with main layer, remove QCENT layer as QCENT2 is the new thing

* More xd75 changes, now that I actually have it in hand

* shift keymap around, as original attempt was a bit too aggressive in keeping to the edges

* more revs to XD75

* Dropping parts of the centre keypad in favor of Keys I Really Need

* Improve documentation to conform with how builds are done now

* Improve documentation to conform with how builds are done now

* Add cbbrowne rules file as alternative to having the rules in Makefile

* Makefile not needed anymore for individual keymap

1 files changed, 26 insertions, 8 deletions

diff --git a/keyboards/xd75/readme.md b/keyboards/xd75/readme.md
index 0bc82be91e..28a2523324 100644
--- a/keyboards/xd75/readme.md
+++ b/keyboards/xd75/readme.md
@@ -9,22 +9,40 @@ For more info on this firmware (and how to make it your own), head over to [qmk.
 
 ## Building
 
-Download or clone the whole firmware and navigate to the keyboards/xd75 folder. Once your dev env is setup, you'll be able to type `make` to generate your .hex - you can then use the Teensy Loader to program your .hex file. 
-
-Depending on which keymap you would like to use, you will have to compile slightly differently.
+Download or clone the whole firmware and navigate to the
+keyboards/xd75 folder. Once your dev env is setup, you'll be able to
+type `make` to generate your .hex - you can then use the Teensy Loader
+to install the resulting .hex file, or have the `make` process install
+it using DFU.
 
 ### Default
 
-To build with the default keymap, simply run `make default`.
+To build with the default keymap, simply run `make xd75-default`, and
+to install via DFU, `make xd75-default-dfu`.
+
+Note that DFU is likely to require root permissions, so installing the
+firmware likely requires a command line like:
+
+```
+$ sudo make xd75-default-dfu
+```
 
 ### Other Keymaps
 
-The "default" keymap included is basically the OLKB Atomic keymap with a few buttons added for RGB underglow control. This should be usable as a starting point, but most people will be best served creating their own keymap and flashing it - more info on creating your own keymap is available in [the official QMK documentation](https://docs.qmk.fm).
+The "default" keymap included is basically the OLKB Atomic keymap with
+a few buttons added for RGB underglow control. This should be usable
+as a starting point, but most people will be best served creating
+their own keymap and flashing it - more info on creating your own
+keymap is available in [the official QMK
+documentation](https://docs.qmk.fm).
+
+Keymaps follow the format **__\<name\>.c__** and are stored in
+subdirectories under `keyboards/xd75/keymaps`
 
-To build the firmware binary hex file with a keymap just do `make` with a keymap like this:
+To build the firmware binary hex file for a specific keymap, and
+install it, using DFU, just do `make` with a keymap like this:
 
 ```
-$ make [default|jack|<name>]
+$ make xd75-[default|<name>]
 ```
 
-Keymaps follow the format **__\<name\>.c__** and are stored in the `keymaps` folder.