Adds autofocus to search input (#49)

Author: vkammerer

_includes/components/finder.html

@@ -1,6 +1,6 @@
 <article class="finder">
   <div class="menu-search">
-    <input id="finder-input" type="search" autocomplete="off" placeholder="Search 129 CSS properties">
+    <input id="finder-input" type="search" autocomplete="off" placeholder="Search 129 CSS properties" autofocus>
     <i class="icon is-search"></i>
   </div>
   <div id="finder-list" class="finder-list">