add webrtc-adaptor dependency

package.json

@@ -12,7 +12,8 @@
     "wildemitter": "^1.2.0",
     "socket.io-client": "1.3.7",
     "attachmediastream": "^2.0.0",
-    "mockconsole": "0.0.1"
+    "mockconsole": "0.0.1",
+    "webrtc-adapter": "^4.0.0"
   },
   "devDependencies": {
     "browserify": "^13.1.0",
@@ -27,9 +28,6 @@
     "uglify-js": "^2.7.3",
     "webrtc-adapter": "^4.0.0"
   },
-  "peerDependencies": {
-    "webrtc-adapter": "^4.0.0"
-  },
   "license": "MIT",
   "scripts": {
     "build": "node build.js",