update markdown plugin formatting to match reveal.js core

plugin/markdown/markdown.js

@@ -36,12 +36,19 @@
 	};
 
 	var twrap = function( el ) {
+
 		var content = el.content || el;
-        content += el.asideContent ? ('<aside class="notes" data-markdown>' + el.asideContent + '</aside>') : '';
+
+		if( el.asideContent ) {
+			content += '<aside class="notes" data-markdown>' + el.asideContent + '</aside>';
+		}
+
 		return '<script type="text/template">' + content + '</script>';
+
 	};
 
 	var getForwardedAttributes = function( section ) {
+
 		var attributes = section.attributes;
 		var result = [];
 
@@ -61,6 +68,7 @@
 		}
 
 		return result.join( ' ' );
+
 	};
 
 	var slidifyMarkdown = function( markdown, separator, vertical, notes, attributes ) {
@@ -105,7 +113,7 @@
 
 			slide = {
 				content: content,
-                asideContent: asideContent || ""
+				asideContent: asideContent || ''
 			};
 
 			if( isHorizontal && wasHorizontal ) {
@@ -138,7 +146,7 @@
 		return markdownSections;
 	};
 
-    var querySlidingMarkdown = function() {
+	var queryExternalMarkdown = function() {
 
 		var sections = document.querySelectorAll( '[data-markdown]'),
 			section;
@@ -153,6 +161,7 @@
 					url = section.getAttribute( 'data-markdown' );
 
 				datacharset = section.getAttribute( 'data-charset' );
+
 				// see https://developer.mozilla.org/en-US/docs/Web/API/element.getAttribute#Notes
 				if( datacharset != null && datacharset != '' ) {
 					xhr.overrideMimeType( 'text/html; charset=' + datacharset );
@@ -162,7 +171,8 @@
 					if( xhr.readyState === 4 ) {
 						if ( xhr.status >= 200 && xhr.status < 300 ) {
 							section.outerHTML = slidifyMarkdown( xhr.responseText, section.getAttribute( 'data-separator' ), section.getAttribute( 'data-vertical' ), section.getAttribute( 'data-notes' ), getForwardedAttributes( section ) );
-                        } else {
+						}
+						else {
 							section.outerHTML = '<section data-state="alert">ERROR: The attempt to fetch ' + url + ' failed with the HTTP status ' + xhr.status +
 								'. Check your browser\'s JavaScript console for more details.' +
 								'<p>Remember that you need to serve the presentation HTML from a HTTP server and the Markdown file must be there too.</p></section>';
@@ -171,9 +181,11 @@
 				};
 
 				xhr.open( 'GET', url, false );
+
 				try {
 					xhr.send();
-                } catch (e) {
+				}
+				catch ( e ) {
 					alert( 'Failed to get the Markdown file ' + url + '. Make sure that the presentation and the file are served by a HTTP server and the file can be found there. ' + e );
 				}
 
@@ -213,8 +225,7 @@
 
 	};
 
-    querySlidingMarkdown();
-
+	queryExternalMarkdown();
 	queryMarkdownSlides();
 
 })();