update icon

data/index.html

@@ -12,7 +12,7 @@
     <div class="main">
         <aside class="controls" role="navigation">
             <header>
-                <img class="logo" src="icons/lightbeam_logo-wordmark_300x150.png" />
+                <img class="logo" src="icons/lightbeam_150x45.png" />
             </header>
 
             <div class="section-header all-cap-header">VISUALIZATION</div>