Changed all .pde examples to .ino

All examples in /build/shared/examples/ and /libraries/ have had their
extensions changed to .ino

build/shared/examples/2.Digital/toneMelody/toneMelody.ino

@@ -0,0 +1,49 @@
+/*
+  Melody
+ 
+ Plays a melody 
+ 
+ circuit:
+ * 8-ohm speaker on digital pin 8
+ 
+ created 21 Jan 2010
+ modified 30 Aug 2011
+ by Tom Igoe 
+
+This example code is in the public domain.
+ 
+ http://arduino.cc/en/Tutorial/Tone
+ 
+ */
+ #include "pitches.h"
+
+// notes in the melody:
+int melody[] = {
+  NOTE_C4, NOTE_G3,NOTE_G3, NOTE_A3, NOTE_G3,0, NOTE_B3, NOTE_C4};
+
+// note durations: 4 = quarter note, 8 = eighth note, etc.:
+int noteDurations[] = {
+  4, 8, 8, 4,4,4,4,4 };
+
+void setup() {
+  // iterate over the notes of the melody:
+  for (int thisNote = 0; thisNote < 8; thisNote++) {
+
+    // to calculate the note duration, take one second 
+    // divided by the note type.
+    //e.g. quarter note = 1000 / 4, eighth note = 1000/8, etc.
+    int noteDuration = 1000/noteDurations[thisNote];
+    tone(8, melody[thisNote],noteDuration);
+
+    // to distinguish the notes, set a minimum time between them.
+    // the note's duration + 30% seems to work well:
+    int pauseBetweenNotes = noteDuration * 1.30;
+    delay(pauseBetweenNotes);
+    // stop the tone playing:
+    noTone(8);
+  }
+}
+
+void loop() {
+  // no need to repeat the melody.
+}