corrected problems with intro file

doc/pub/Intro2Course/html/reveal.js/plugin/math/math.js

@@ -7,17 +7,14 @@
 var RevealMath = window.RevealMath || (function(){
 
 	var options = Reveal.getConfig().math || {};
-	options.mathjax = options.mathjax || 'https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.0/MathJax.js';
+	options.mathjax = options.mathjax || 'https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.1/MathJax.js';
 	options.config = options.config || 'TeX-AMS_HTML-full';
 
 	loadScript( options.mathjax + '?config=' + options.config, function() {
 
 		MathJax.Hub.Config({
 			messageStyle: 'none',
-			tex2jax: {
-				inlineMath: [['$','$'],['\\(','\\)']] ,
-				skipTags: ['script','noscript','style','textarea','pre']
-			},
+			tex2jax: { inlineMath: [['$','$'],['\\(','\\)']] },
 			skipStartupTypeset: true
 		});