Selected updates from latest beautiful-jekyll changes

Update main.css, nexted menus: ensure title width is wide enough to
accommodate children, Integrating public custom linkedin URL, add
instagram, snapchat, youtube, and spotify links, updated awesome-font to
v4.6, and updated CSS

exampleSite/content/post/2015-02-20-test-markdown.md

@@ -22,16 +22,18 @@ Here's a useless table:
 
 How about a yummy crepe?
 
-![Crepe](http://lafenicegelato.com/wp-content/uploads/2014/09/crepes-with-chocolate.jpg)
+![Crepe](http://s3-media3.fl.yelpcdn.com/bphoto/cQ1Yoa75m2yUFFbY2xwuqw/348s.jpg)
 
 Here's a code chunk:
 
 ~~~
-x <- 5 + 10
-print(x)
+var foo = function(x) {
+  return(x + 5);
+}
+foo(3)
 ~~~
 
-And here is some code with syntax highlighting
+And here is the same code with syntax highlighting:
 
 ```javascript
 var foo = function(x) {
@@ -39,3 +41,12 @@ var foo = function(x) {
 }
 foo(3)
 ```
+
+And here is the same code yet again but with line numbers:
+
+{{< highlight python linenos >}}
+var foo = function(x) {
+  return(x + 5);
+}
+foo(3)
+{{</ highlight >}}