Make favicon transparent

Author: wallento

Diff for: _includes/head.html

@@ -4,7 +4,7 @@
   <title>Open SoC Debug</title>
 
   <link rel="apple-touch-icon" href="{{ site.compass.logo }}"/>
-  <link rel="shortcut icon" sizes="16x16 24x24 32x32 48x48 64x64" href="{{ site.url }}/favicon.ico" />
+  <link rel="shortcut icon" sizes="16x16 24x24 32x32 48x48 64x64" href="{{ site.url }}/favicon.ico?v=2" />
 
   <link href="//netdna.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css" rel="stylesheet">