Load Google fonts with the same protocol

This change makes sure the site loads fine when loading over https.
If we do not, the site will report warnings about mixed contents and thus is not fully secure.

Author: TimvdLippe

Diff for: index.html

@@ -6,10 +6,10 @@
   <meta charset="UTF-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1">
   <title>{{ site.title }}</title>
-	<meta name="keywords" content="{{ site.keywords }}">
-	<meta name="description" content="{{ site.description }}">
+  <meta name="keywords" content="{{ site.keywords }}">
+  <meta name="description" content="{{ site.description }}">
   <link rel="stylesheet" href="combo.css">
-  <link href='http://fonts.googleapis.com/css?family=Raleway:400,300,700' rel='stylesheet' type='text/css'>
+  <link href='//fonts.googleapis.com/css?family=Raleway:400,300,700' rel='stylesheet' type='text/css'>
   <link rel="stylesheet" href="//netdna.bootstrapcdn.com/font-awesome/4.2.0/css/font-awesome.min.css">
   {% if site.favicon %}<link rel="shortcut icon" href="{{ site.favicon }}" type="image/x-icon">{% endif %}
 	{% if site.touch_icon %}<link rel="apple-touch-icon" href="{{ site.touch_icon }}">{% endif %}