Moved ep40 to ep/40 for easier adding of next ep keyboard

keyboards/handwired/ep40/ep40.c → keyboards/ep/40/40.c

@@ -13,7 +13,7 @@
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
-#include "ep40.h"
+#include "40.h"
 
 void matrix_init_kb(void) {
 	// put your keyboard start-up code here

keyboards/handwired/ep40/readme.md → keyboards/ep/40/readme.md

@@ -10,6 +10,6 @@ Hardware Availability: None at the moment
 
 Make example for this keyboard (after setting up your build environment):
 
-    make ep40:default
+    make ep/40:default
 
 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).