SingleBrowserMode button for Fiddler.

Single.js

	// Rules > Customize Rules, place this just inside the HANDLERS class...

  // Add a button to Fiddler's UI for "Single Browser Mode", where only one browser window will
	// send its traffic to Fiddler.
	public static BindUIButton("SingleBrowserMode \uD83D\uDC40")
	function LaunchSingleInstance() {
		// Tell the system we're not the proxy anymore
		FiddlerApplication.UI.actDetachProxy();
		// Launch a single browser instance pointed directly at Fiddler.
		System.Diagnostics.Process.Start('msedge.exe', 
			'--user-data-dir="%temp%\\throwaway" --no-first-run --proxy-server=127.0.0.1:' + CONFIG.ListenPort.ToString() + " about:blank");
	}