Merge pull request #702 from Nitesh639/getPictch_doc

getPatch() documentation

Author: davepagurek

src/soundfile.js

@@ -902,6 +902,16 @@ class SoundFile {
     var newPlaybackRate = midiToFreq(num) / midiToFreq(60);
     this.rate(newPlaybackRate);
   }
+
+  /**
+   * Returns the current pitch of a sound file as a MIDI note.
+   *
+   * @method getPitch
+   * @for p5.SoundFile
+   * @return {Number}  Current pitch of the SoundFile. The default note is assumed to
+   *                   be 60 (middle C).
+   *
+   */
   getPitch() {
     var freqValue = this.rate() * midiToFreq(60);
     return freqToMidi(freqValue);