Use more explicit name

js/reveal.js

@@ -193,24 +193,24 @@ var Reveal = (function(){
 		dom.slides = document.querySelector( '.reveal .slides' );
 
 		// Background element
-		dom.background = initializeNode(dom.wrapper, 'div', 'backgrounds', null);
+		dom.background = createSingletonNode(dom.wrapper, 'div', 'backgrounds', null);
 
 		// Progress bar
-		dom.progress = initializeNode(dom.wrapper, 'div', 'progress', '<span></span>');
+		dom.progress = createSingletonNode(dom.wrapper, 'div', 'progress', '<span></span>');
 		dom.progressbar = dom.progress.querySelector('span');
 
 		// Arrow controls
-		initializeNode(dom.wrapper, 'aside', 'controls',
+		createSingletonNode(dom.wrapper, 'aside', 'controls',
 			'<div class="navigate-left"></div>' +
 			'<div class="navigate-right"></div>' +
 			'<div class="navigate-up"></div>' +
 			'<div class="navigate-down"></div>');
 
 		// State background element [DEPRECATED]
-		initializeNode(dom.wrapper, 'div', 'state-background', null);
+		createSingletonNode(dom.wrapper, 'div', 'state-background', null);
 
 		// Overlay graphic which is displayed during the paused mode
-		initializeNode(dom.wrapper, 'div', 'pause-overlay', null);
+		createSingletonNode(dom.wrapper, 'div', 'pause-overlay', null);
 
 		// Cache references to elements
 		if ( config.controls ) {
@@ -227,7 +227,7 @@ var Reveal = (function(){
 
 	}
 
-	function initializeNode(container, tagname, classname, innerHTML){
+	function createSingletonNode(container, tagname, classname, innerHTML){
 		var node = container.querySelector('.' + classname);
 		if( !node ){
 			node = buildNode(tagname, classname, innerHTML);