adding external image for config

Author: sergiokopplin

_config.yml

@@ -1,7 +1,9 @@
+# main text of home
 name: John Doe
 bio: 'A Man who travels the world eating noodles'
 
-# main text of home
+# if it's an external image, update below for true
+external-image: true
 picture: 'assets/images/profile.jpg'
 
 url: http://sergiokopplin.github.io/indigo

_includes/header.html

@@ -7,7 +7,7 @@
 {% if showHeader == true %}
     <header class="header-home {% if site.animation %}animated{% endif %}">
         <a class="link" href="{{ site.url }}/about">
-            <img class="selfie" alt="{{ site.name }}" src="{{ site.url }}/{{ site.picture }}" />
+            <img class="selfie" alt="{{ site.name }}" src="{% if site.external-image == true %}{{ site.picture }}{% else %}{{ site.url }}/{{ site.picture }}{% endif %}" />
         </a>
 
         <h1 class="title">{{ site.name }}</h1>