irrisponsibly massive commit

source/_includes/header.html

@@ -0,0 +1,10 @@
+<h1><a href="/">{{ site.title }}</a></h1>
+{% if site.google_custom_search_id && site.google_custom_search_id %}
+  <div id="search">
+    <form action="http://www.google.com/cse" id="cse-search-box">
+      <input type="hidden" name="cx" value="{{ site.google_custom_search_id }}">
+      <input type="hidden" name="ie" value="UTF-8">
+      <input#q type="text" name="q">
+    </form>
+  </div>
+{% endif %}