title: Record sound of a webaudio api's audio context
body: <p>I am using web audio api in my project.  Is there a way to record the audio data that's being sent to webkitAudioContext.destination?
  .wav files are playing in my browser, so there should be some way to store that data into a (.wav) file . i know this is possible, but not yet find any solution :(
  recorder.js can help me, but upto now i found it is only recording the microphone live input, is it possible to record my audio(.wav files) with the help of recorder.js? plz help</p>
  
  <p>i am using this sample for recording <a href="https://github.com/mattdiamond/Recorderjs" rel="nofollow">https://github.com/mattdiamond/Recorderjs</a></p>