添加doc预览

src/index.js

@@ -4,7 +4,6 @@ const install = function(Vue) {
   if (install.installed) return;
 
   Vue.component(Sample.name, Sample);
-
 };
 
 // auto install

src/style/empty.css

@@ -1 +0,0 @@
-

src/style/var.css

@@ -1,10 +0,0 @@
-/* UI标准色 */
-$o2-c-orange: #f60;
-$o2-c-green: #06bf04;
-$o2-c-red: #ed5050;
-$o2-c-black: #333;
-$o2-c-gray-darker: #666;
-$o2-c-gray-dark: #999;
-$o2-c-gray: #c9c9c9;
-$o2-c-gray-light: #e5e5e5;
-$o2-c-background: #f8f8f8;