stub out RTCDataChannel attributes and methods fixes nickdesaulniers#9

lib/RTCDataChannel.js

@@ -3,10 +3,10 @@ var util = require('util');
 // https://w3c.github.io/webrtc-pc/#rtcdatachannel
 
 function RTCDataChannel() {
-	EventTarget.call(this);
+  EventTarget.call(this);
 
-	// https://w3c.github.io/webrtc-pc/#idl-def-RTCDataChannel
-	this.label = null;
+  // https://w3c.github.io/webrtc-pc/#idl-def-RTCDataChannel
+  this.label = null;
   this.negotiated = false;
   this.protocol = '';
   this.maxPacketLifeTime = null;
@@ -34,26 +34,26 @@ RTCDataChannel.prototype.send = function(data) {
   //TODO:Step 1 implies this?
   //Step 2
   if (this.readyState === 'connecting') {
-      throw new Error('InvalidStateError');
+    throw new Error('InvalidStateError');
   }
   //TODO:Does this work in all browsers and node?
   //Step 3
   if (typeof data === "string" || data instanceof String) {
-      //TODO:increment this.bufferedAmount by length of string in UTF-8
-      //TODO: send String
+    //TODO:increment this.bufferedAmount by length of string in UTF-8
+    //TODO: send String
   } else if (data instanceof Blob) {
-      this.bufferedAmount += data.size;
-      //TODO: send Blob
+    this.bufferedAmount += data.size;
+    //TODO: send Blob
   } else if (data instanceof ArrayBuffer) {
-      this.bufferedAmount += data.byteLength;
-      //TODO:Does isView work in all browsers and node?
-      if (ArrayBuffer.isView(data)) {
+    this.bufferedAmount += data.byteLength;
+    //TODO:Does isView work in all browsers and node?
+    if (ArrayBuffer.isView(data)) {
       //TODO: send ArrayBufferView
-      } else {
-  	    //TODO: send ArrayBuffer
-      }
+    } else {
+      //TODO: send ArrayBuffer
+    }
   } else {
-      //TODO: need to handle bad datatype 
+    //TODO: need to handle bad datatype 
   }
   //TODO:Step 4
   //TODO:Step 5
@@ -64,7 +64,7 @@ RTCDataChannel.prototype.close = function() {
   //TODO: Is 'this' not the RTCDataChannel Step 1
   //Step 2
   if (this.readyState === 'closing' || this.readyState === 'closed') {
-      return;
+    return;
   }
   //Step 3
   this.readyState = 'closing';