Update documentation and comments

Get it ready for a pull request.

.gitignore

@@ -0,0 +1,2 @@
+*.swp
+.DS-Store

README.md

@@ -16,8 +16,8 @@ Creates a recorder instance.
 
 - **workerPath** - Path to recorder.js worker script. Defaults to 'js/recorderjs/recorderWorker.js'
 - **bufferLen** - The length of the buffer that the internal JavaScriptNode uses to capture the audio. Can be tweaked if experiencing performance issues. Defaults to 4096.
-- **callback** - A default callback to be used with `exportWAV`.
-- **type** - The type of the Blob generated by `exportWAV`. Defaults to 'audio/wav'.
+- **callback** - A default callback to be used with `exportAudio`.
+- **type** - The type of the Blob generated by `exportAudio`. Defaults to 'audio/wav'.
 
 ---------
 #### Instance Methods
@@ -31,7 +31,7 @@ Pretty self-explanatory... **record** will begin capturing audio and **stop** wi
 
 This will clear the recording.
 
-    rec.exportWAV([callback][, type])
+    rec.exportAudio([callback][, type])
 
 This will generate a Blob object containing the recording in WAV format. The callback will be called with the Blob as its sole argument. If a callback is not specified, the default callback (as defined in the config) will be used. If no default has been set, an error will be thrown.
 

recorderWorkerMP3.js

@@ -21,6 +21,11 @@ this.onmessage = function(e) {
   }
 };
 
+// The initilization default sample rate of the input audio at 44k
+// and scaled it down to 22k output. Not sure why this is necessary but is
+// needed for the sound to come out right.
+// The channels is set to mono and listenning to channel 1 which is the left channel.
+// There is some problem with stereo channel support.
 function init(config) {
   if (!config) {
     config = {};
@@ -43,6 +48,9 @@ function record(buffer) {
   recLength += mp3data.data.length;
 }
 
+// Similar to the original exportWAV, it grabs the mp3 data from Lame encoder
+// object and build an mp3 blob with it.
+// When done, it posts the audio blob message to the worker.
 function exportAudio() {
   var mp3data = Lame.encode_flush(mp3codec);
 
@@ -59,6 +67,8 @@ function exportAudio() {
   this.postMessage(audioBlob);
 }
 
+// Close the Lame encoder object stream, empty out the data in buffer and
+// reset the buffer length stored.
 function clear() {
   Lame.close(mp3codec);
   mp3codec = null;