Add simple breadcrumb

components/breadcrumb/demo/basic.md

+# 基本
+
+- order: 0
+
+最简单的用法。
+
+---
+
+````jsx
+var Breadcrumb = antd.Breadcrumb;
+
+React.render(
+  <Breadcrumb>
+    <Breadcrumb.Item href="">首页</Breadcrumb.Item>
+    <Breadcrumb.Item href="">应用列表</Breadcrumb.Item>
+    <Breadcrumb.Item>应用</Breadcrumb.Item>
+  </Breadcrumb>
+, document.getElementById('components-breadcrumb-demo-basic'));
+````

components/breadcrumb/index.jsx

+'use strict';
+
+import React from 'react';
+
+let prefixCls = 'ant-breadcrumb';
+
+let BreadcrumbItem = React.createClass({
+  render() {
+    var link = <a className={prefixCls + '-link'} {...this.props}>{this.props.children}</a>;
+    var slash = <span className={prefixCls + '-slash'}>/</span>;
+    if (typeof this.props.href === 'undefined') {
+      slash = '';
+      link = <span className={prefixCls + '-link'} {...this.props}>{this.props.children}</span>;
+    }
+    return (
+      <span>
+        {link}
+        {slash}
+      </span>
+    );
+  }
+});
+
+let Breadcrumb = React.createClass({
+  render() {
+    return (
+      <div className={prefixCls}>
+        {this.props.children}
+      </div>
+    );
+  }
+});
+
+Breadcrumb.Item = BreadcrumbItem;
+export default Breadcrumb;

components/breadcrumb/index.md

 # BreadCrumb
 
-- category: CSS
+- category: Components
 - chinese: 面包屑
 
 ---

index.js

@@ -10,6 +10,7 @@ var antd = {
   Progress: require('./components/progress'),
   Popover: require('./components/popover'),
   Select: require('./components/select'),
+  Breadcrumb: require('./components/breadcrumb'),
   Popconfirm: require('./components/popconfirm'),
   confirm: require('./components/modal/confirm'),
   Steps: require('./components/steps')

style/components/breadcrumb.less

+@breadcrumbPrefixCls: ant-breadcrumb;
+
+.@{breadcrumbPrefixCls} {
+  color: #999;
+  font-size: 12px;
+
+  a&-link {
+    color: #666;
+  }
+
+  > span:last-child {
+    font-weight: bold;
+    color: #666;
+  }
+
+  &-slash {
+    margin: 0 8px;
+    color: #d9d9d9;
+  }
+}

style/components/index.less

@@ -11,4 +11,5 @@
 @import "form";
 @import "loading";
 @import "progress";
-@import "steps";
\ No newline at end of file
+@import "steps";
+@import "breadcrumb";