ACtl.saveURL
			
			
	Saves the content of a URL to a file or folder. There's no limit on the amont of data being downloaded other than available disk space. 
				
	
		ACtl.saveURL(srcUrl,destPath)						srcUrl Type: string 
		Either a URL or data URI  to get the data from. The data will be saved bit-for-bit identical to the source.
			destPath Type: string 
		Local path or UNC path of the destination file or folder. If it ends with a slash or backslash,
						it will be interpreted as a folder, in which case the file name is deduced from srcUrl and
						the HTTP response headers. 
 It can be relative to the script's location (if there is one). It can also contain placeholders such as <desktop>, <documents> and others.. 
						If the path doesn't exist, it'll be created.
			Returns Type: Promise  Resolves to: string 
		Returns immediately. The Promise will resolve with the absolute file path to which srcUrl was saved.
			Throws Type: string 
		Error description if srcUrl or destPath cannot be accessed.
		
	Example
	Save all images in a page to a folder in the desktop.
	
	//The destination folder name will be the page's domain
	let destFolder = `<desktop>/${location.hostname}/` ;
	let count = 0 ;
	//For each image in the page
	for( let image of document.images ){
		//If the image is bigger than 100x100 pixels
		if( image.src && image.width > 100 && image.height > 100 ){
			//Save it to the destination folder
			let filePath = await ACtl.saveURL(image.src, destFolder) ;
			console.log(++count, image.src, ' --> ', filePath) ;
		}
	}
	alert(count + ' IMAGES SAVED.') ;