[TIMOB-16558] Windows Hybrid: Create module development guide

We need to enable users to access native functionality from inside Windows Hybrid. Some initial work has been done on the functionality. For instance, you can do the following:

var button = Ti.MobileWeb.WP8.createInstance('System.Windows.Controls.Button', [], []);
button.setProp('Content', 'Click me, I\'m Native');

var children = Ti.MobileWeb.WP8.getRootGrid().getProp('Children');
children.invoke('RemoveAt', ['System.Int32'], [0]);
children.invoke('Add', ['System.Windows.Controls.Button'], [button]);

This code creates a native button and sets its title to "Click me, I’m Native”. It then removes the web view hosting the mobile web app from the screen and replaces it with this button. We need to create a simple sample module project (similar to http://docs.appcelerator.com/titanium/latest/#!/guide/iOS_Module_Development_Guide) and show a developer how to utilize this functionality.