Fixes #277

Add entry to allow for previous and current versions of guide.

Author: daobrien

index.html

@@ -39,8 +39,13 @@
       </p>
 
       <h3>
-      <a href="http://stylepedia.net/style" target="_blank" title="The Red Hat Technical Writing Style Guide">
-        <img class="social" src="font/fontawesome/svgs/brands/readme.svg" alt="Style Guide" width="40em" /> Red&nbsp;Hat Technical Writing Style Guide</a>
+      <a href="http://stylepedia.net/style/4.2" target="_blank" title="The Red Hat Technical Writing Style Guide">
+        <img class="social" src="font/fontawesome/svgs/brands/readme.svg" alt="Style Guide" width="40em" /> Red&nbsp;Hat Technical Writing Style Guide v4.2</a>
+    </h3>
+
+      <h3>
+      <a href="http://stylepedia.net/style/5.0" target="_blank" title="The Red Hat Technical Writing Style Guide">
+        <img class="social" src="font/fontawesome/svgs/brands/readme.svg" alt="Style Guide" width="40em" /> Red&nbsp;Hat Technical Writing Style Guide v5.0</a>
     </h3>
 
     <!--<h3>