Update normalize.css to v3.0.2.

dist/css/bootstrap.css

@@ -4,7 +4,7 @@
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
 
-/*! normalize.css v3.0.1 | MIT License | git.io/normalize */
+/*! normalize.css v3.0.2 | MIT License | git.io/normalize */
 html {
   font-family: sans-serif;
   -webkit-text-size-adjust: 100%;
@@ -22,6 +22,7 @@ footer,
 header,
 hgroup,
 main,
+menu,
 nav,
 section,
 summary {
@@ -43,7 +44,7 @@ template {
   display: none;
 }
 a {
-  background: transparent;
+  background-color: transparent;
 }
 a:active,
 a:hover {