Keymap: Add software development oriented bepo layout to xd75 (#3451)

* added special keys

* formatting

* disabled autoshift

* updated readme to follow guidelines

* changed copyright

* minor fixes

* added changes requested

* update traditional bepo layout

keyboards/xd75/keymaps/c4software_bepo/config.h

@@ -14,11 +14,6 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef CONFIG_USER_H
-#define CONFIG_USER_H
+# pragma once
 
 #include "../../config.h"
-
-// place overrides here
-
-#endif