XD75RE Custom layout, and clarification in readme.md (#1754)

* Duplicate default layout as basis of my own

* Basic Colemak layer, just to practice flashing

* Add reset button so that we don't have to short out the reset button on the board to flash it.

* Symbols layer

* Navigation layer, and remove unused keys. Now usable, nice.

* Correct backspace for UK QWERTY mapping

* Small clarification in XD75RE readme instructions

* Use UK pipe so that I can type a pipe on a UK keyboard

keyboards/xd75/keymaps/skewwhiffy/Makefile

@@ -0,0 +1,18 @@
+# Copyright 2013 Jun Wako <wakojun@gmail.com>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+ifndef QUANTUM_DIR
+	include ../../../../Makefile
+endif