Scala.js version on front page. fixes #196

Author: rockjam

_assets/css/style.scss

@@ -709,3 +709,8 @@ a[name]:before {
   padding-left: 8px;
   padding-right: 8px;
 }
+
+.smaller {
+  font-size:60%;
+  opacity: 0.5;
+}

index.html

@@ -9,7 +9,7 @@
                 <img width="100" src="{{ '/assets/img/scala-js-logo.svg' | prepend: site.baseurl }}">
 
                 <div>
-                    <h2 style="margin-top: 10px;">Scala.js</h2><h4>A safer way to build robust<br/> front-end web applications!</h4>
+                    <h2 style="margin-top: 10px;">Scala.js<span class="smaller">&nbsp;{{ site.versions.scalaJS }}</span></h2><h4>A safer way to build robust<br/> front-end web applications!</h4>
                 </div>
                 <div>
                     <a class="btn btn-theme" href="{{ site.baseurl }}/tutorial/">Learn Scala.js</a>