Suggest VS Code instead of Atom (#2275)

index.html

@@ -267,7 +267,7 @@ <h2>Tools</h2>
 				<ul>
 					<li><a href="http://www.pnotepad.org/">Programmer's Notepad</a> (Windows)</li>
 					<li><a href="http://www.sublimetext.com/">Sublime Text</a> (Windows, OS X, Linux)</li>
-					<li><a href="https://atom.io/">Atom</a> (Windows, OS X, Linux)</li>
+					<li><a href="https://code.visualstudio.com/">Visual Studio Code</a> (Windows, OS X, Linux)</li>
 					<li><a href="https://notepad-plus-plus.org/">Notepad++</a> (Windows)</li>
 				</ul>
 				<p>I use Programmer's Notepad, but any of these editors will do.</p>