Fixed background image URL on index.html

Author: Curtis Rissi

index.html

@@ -2,7 +2,7 @@
 layout: default
 title: Home
 about: 'about.html'
-cover: http://www.boringgeek.com/content/images/2015/05/imacWindowReduced.jpg
+cover: http://assets.boringgeek.com/imacWindowReduced.jpg
 ---
 
 <header class="main-header {% if page.cover %}" style="background-image: url({{ page.cover }}) {%else%}no-cover{% endif %}">