fix(website): search icon

Author: Shipow

docs/_includes/header.html

@@ -12,6 +12,7 @@
           <li class="hidden-xs">
             <form class="form search-form" action="#">
               <input class="form-control" type="text" id="doc-search" />
+              <div class="search-icon"><i class="fa fa-search"></i></div>
             </form>
           </li>
           {% assign url = page.url %}

docs/css/_search.sass

@@ -21,15 +21,13 @@
       width: 300px
       border: solid 2px $brand-primary
       transition: all .2s
-  &:before
+  .search-icon
     display: block
     width: 20px
     height: 20px
     position: absolute
-    top: 4px
+    top: 2px
     left: 10px
-    content: "\f002"
-    font-family: FontAwesome
     text-align: center
     color: $brand-primary
     pointer-events: none