add english version

css/main.css

@@ -350,11 +350,10 @@ html {
   top: 0;
 }
 .navbar > .logo {
-  loat: left;
+  float: left;
   width: 180px;
   height: 50px;
   background: url(img/logo.png) no-repeat;
-  float: left;
   background-color: #fff;
   background-position: center;
   background-image: url(img/logo@1x.png);
@@ -486,19 +485,27 @@ html {
   background: rgba(222, 222, 222, 0.5);
   pointer-events: none;
 }
-.forkme {
+.forkme,
+.userguide,
+.switch-lang {
   position: absolute;
   color: #FFF;
+  color: #333;
+}
+.forkme {
   right: 2px;
   top: 2px;
-  color: #333333;
 }
 .userguide {
-  position: absolute;
-  color: #FFF;
   right: 2px;
   top: 24px;
-  color: #333;
+}
+.switch-lang {
+  right: 140px;
+  top: 2px;
+}
+.switch-lang a {
+  color: #666;
 }
 .modal {
   background: -webkit-radial-gradient(center, circle contain, rgba(255, 255, 255, 0.6) 0%, rgba(0, 0, 0, 0.6) 100%);