Upgrade ws module (#2579)

The newer version doesn't require `bufferutil` or `utf-8-validate` both of which have native V8 code which we are trying to get rid of.
Debugging still works with this new version - tested on three different OS X machines with `tns debug ios --chrome` command.

Author: Mitko-Kerezov

lib/device-sockets/ios/socket-proxy-factory.ts

@@ -78,7 +78,7 @@ export class SocketProxyFactory implements ISocketProxyFactory {
 		// We store the socket that connects us to the device in the upgrade request object itself and later on retrieve it
 		// in the connection callback.
 
-		let server = ws.createServer(<any>{
+		let server = new ws.Server(<any>{
 			port: localPort,
 			verifyClient: (info: any, callback: Function) => {
 				this.$logger.info("Frontend client connected.");

package.json

@@ -29,7 +29,6 @@
   "dependencies": {
     "bplist-parser": "0.1.0",
     "bufferpack": "0.0.6",
-    "bufferutil": "https://github.com/telerik/bufferutil/tarball/v1.0.1.5",
     "byline": "4.2.1",
     "chalk": "1.1.0",
     "chokidar": "^1.6.1",
@@ -70,10 +69,9 @@
     "source-map": "0.5.6",
     "tabtab": "https://github.com/Icenium/node-tabtab/tarball/master",
     "temp": "0.8.3",
-    "utf-8-validate": "https://github.com/telerik/utf-8-validate/tarball/v1.0.1.5",
     "uuid": "3.0.1",
     "winreg": "0.0.17",
-    "ws": "0.7.1",
+    "ws": "2.2.0",
     "xcode": "https://github.com/NativeScript/node-xcode/archive/1.4.0.tar.gz",
     "xmldom": "0.1.21",
     "xmlhttprequest": "https://github.com/telerik/node-XMLHttpRequest/tarball/master",