Reorganizing library structure, prep for 2.0.0

drivers/AVR/DigitalIO/examples/DigitalPinConfigToggle/DigitalPinConfigToggle.ino

@@ -0,0 +1,18 @@
+// Demo of config() and fast toggle() function.
+#include <DigitalIO.h>
+
+// Class with compile time pin number.
+DigitalPin<13> pin13;
+
+void setup() {
+  // Set mode to OUTPUT and level LOW.
+  pin13.config(OUTPUT, LOW);
+}
+void loop() {
+  // toggle is a two byte instruction that executes
+  // in two cycles or 125 ns on a 16 MHz CPU
+  pin13.toggle();
+  delay(100);
+  pin13.toggle();
+  delay(400);
+}