Ensure compatibility with Web Client SDK 9.0

Author: dario-weswit

README.md

@@ -35,9 +35,6 @@ If you want to install a version of this demo pointing to your local Lightstream
 * As prerequisite, the [Lightstreamer - Basic Messenger Demo - Java Adapter](https://github.com/Lightstreamer/Lightstreamer-example-Messenger-adapter-java) has to be deployed on your local Lightstreamer Server instance. Please check out that project and follow the installation instructions provided with it.
 * Download this project.
 * Get the `lightstreamer.min.js` file from [npm](https://www.npmjs.com/package/lightstreamer-client-web) or [unpkg](https://unpkg.com/lightstreamer-client-web/lightstreamer.min.js) and put it in the `src/js` folder. 
-  Alternatively, you can generate a customized lightstreamer.min.js library containing only the classes you actually use;
-  see the build instructions on the [GitHub page](https://github.com/Lightstreamer/Lightstreamer-lib-client-javascript#building).
-  In that case, be sure to include the LightstreamerClient, Subscription, DynaGrid, ConnectionSharing, and StatusWidget modules.
 * Get the `require.js` file form [requirejs.org](http://requirejs.org/docs/download.html) and put it in the `src/js` folder.
 * Deploy this demo on the Lightstreamer Server (used as Web server) or in any external Web Server. If you choose the former, please note that in the `<LS_HOME>/pages/demos/` folder, there may be already a `MessengerDemo` folder. If this is not your case, please create the folders `<LS_HOME>/pages/MessengerDemo` and copy here the contents of the `/src` folder of this project.
 The client demo configuration assumes that Lightstreamer Server, Lightstreamer Adapters, and this client are launched on the same machine. If you need to target a different Lightstreamer server, please search in `js/lsClient.js` this line:<BR/> 

src/js/lsClient.js

@@ -23,7 +23,6 @@ define(["LightstreamerClient","StatusWidget"],function(LightstreamerClient,Statu
 
     var lsClient = new LightstreamerClient(protocolToUse+"//localhost:"+portToUse,"MESSENGER");
 
-    lsClient.connectionSharing.enableSharing("MessengerDemoCommonConnection", "ATTACH", "CREATE");
     lsClient.addListener(new StatusWidget("left", "0px", true));
     lsClient.connect();