Use data file to maintain site navigation

- Remove top navigation links from _config.yml

_config.yml

@@ -32,19 +32,6 @@ google_verify:
 # https://ssl.bing.com/webmaster/configure/verify/ownership Option 2 content= goes here
 bing_verify:
 
-# Links to include in top navigation
-# For external links add external: true
-links:
-  - title: About
-    url: /about/
-  - title: Posts
-    url: /posts/
-  - title: Theme Setup
-    url: /theme-setup/
-  - title: Made Mistakes
-    url: http://mademistakes.com
-    external: true
-
 # http://en.wikipedia.org/wiki/List_of_tz_database_time_zones
 timezone:    America/New_York
 future:      true

_data/navigation.yml

@@ -0,0 +1,13 @@
+# Site navigation links
+
+- title: About
+  url: /about/
+
+- title: Sample Posts
+  url: /posts/
+
+- title: Theme Setup
+  url: /theme-setup/
+
+- title: Made Mistakes
+  url: http://mademistakes.com

_includes/_navigation.html

@@ -5,8 +5,13 @@
 	<div class="top-navigation">
 		<nav role="navigation" id="site-nav" class="nav">
 		    <ul>
-		        {% for link in site.links %}
-				<li><a href="{% if link.external %}{{ link.url }}{% else %}{{ site.url }}{{ link.url }}{% endif %}" {% if link.external %}target="_blank"{% endif %}>{{ link.title }}</a></li>
+		        {% for link in site.data.navigation %}
+					    {% if link.url contains 'http' %}
+					        {% assign domain = '' %}
+					        {% else %}
+					        {% assign domain = site.url %}
+					    {% endif %}
+					    <li><a href="{{ domain }}{{ link.url }}" {% if link.url contains 'http' %}target="_blank"{% endif %}>{{ link.title }}</a></li>
 					  {% endfor %}
 		    </ul>
 		</nav>