update demos

components/steps/demo/custom-icon.md

-# Steps 自定义图标步进条
+# 自定义图标步进条
 
 - order: 2
 
@@ -23,12 +23,8 @@
 ````
 
 ````jsx
-'use strict';
-
 var Steps = antd.Steps;
-
 var container = document.getElementById('components-steps-demo-custom-icon');
-
 var imgIcon = <div className='my-step-icon'><img src='https://t.alipayobjects.com/images/rmsweb/T1B9hfXcdvXXXXXXXX.svg'/></div>
 
 

components/steps/demo/simple.md

-# Steps 基本用法
+# 基本用法
 
 - order: 0
 
-简单的步进条
+简单的步骤条
 
 ---
 
 ````jsx
-'use strict';
-
 var Steps = antd.Steps;
-
 var container = document.getElementById('components-steps-demo-simple');
 
-
 var steps = [{
   status: 'finish',
   title: '已完成',
@@ -43,4 +39,4 @@ React.render(
   <Steps>
     {steps}
   </Steps>, container);
-````
\ No newline at end of file
+````

components/steps/demo/small-size.md

-# Steps 迷你版步进条
+# 迷你版
 
 - order: 1
 
@@ -7,13 +7,9 @@
 ---
 
 ````jsx
-'use strict';
-
 var Steps = antd.Steps;
-
 var container = document.getElementById('components-steps-demo-small-size');
 
-
 var steps = [{
   status: 'finish',
   title: '已完成'
@@ -27,16 +23,13 @@ var steps = [{
   status: 'wait',
   title: '待运行'
 }].map(function(s, i) {
-    return (<Steps.Step
-        key={i}
-        status={s.status}
-        title={s.title}
-        ></Steps.Step>
-    );
-  });
-
-React.render(
-  <Steps size="small">
-    {steps}
-  </Steps>, container);
-````
\ No newline at end of file
+  return (<Steps.Step
+      key={i}
+      status={s.status}
+      title={s.title}>
+    </Steps.Step>
+  );
+});
+
+React.render(<Steps size="small">{steps}</Steps>, container);
+````

components/steps/demo/step-next.md

-# Steps 如何控制切换到下一步
+# 切换到下一步
 
 - order: 3
 
+随机生成3~6个步骤，初始随机进行到其中一个步骤。
+
 ---
 
-````css
+<style>
 .my-step-form {
   width: 100%;
 }
@@ -14,7 +16,7 @@
 .my-step-container {
   width: 100%;
 }
-````
+</style>
 
 ````jsx
 var container = document.getElementById('components-steps-demo-step-next');
@@ -47,7 +49,6 @@ var MyForm = React.createClass({
   render() {
     var cs = this.state.currentStep;
     return (<form className='my-step-form'>
-      <div>这个demo随机生成3~6个步骤，初始随机进行到其中一个步骤</div>
       <div>当前正在执行第{cs + 1}步</div>
       <div className='my-step-container'><Steps>
         {steps.map(function(s, i) {
@@ -67,5 +68,4 @@ var MyForm = React.createClass({
 });
 
 React.render(<MyForm></MyForm>, container);
-
-````
\ No newline at end of file
+````

components/steps/index.md

 # Steps
 
 - category: Components
-- chinese: 步进条
+- chinese: 步骤条
 - order: 8
 - cols: 1