updata enter-animation style

components/enter-animation/demo/basic.md

@@ -38,9 +38,9 @@ var Test = React.createClass({
   render() {
     return (
       <div>
-        <div style={{'margin-bottom':20}}>
+        <div style={{marginBottom:20}}>
           <button className="ant-btn ant-btn-primary" onClick={this.onEnter}>进场</button>
-          <button className="ant-btn ant-btn-primary" style={{'margin-left':20}} onClick={this.onLeave}>出场</button>
+          <button className="ant-btn ant-btn-primary" style={{marginLeft:20}} onClick={this.onLeave}>出场</button>
         </div>
         <EnterAnimation interval={this.state.interval} type={this.state.type} upend={this.state.upend} direction={this.state.direction}>
           <div className="demo-header" enter-data>

components/enter-animation/demo/enter-data.md

@@ -42,9 +42,9 @@ var Test = React.createClass({
   render() {
     return (
     <div>
-      <div style={{'margin-bottom':20}}>
+      <div style={{marginBottom:20}}>
         <button className="ant-btn ant-btn-primary" onClick={this.onEnter}>进场</button>
-        <button className="ant-btn ant-btn-primary" style={{'margin-left':20}} onClick={this.onLeave}>出场</button>
+        <button className="ant-btn ant-btn-primary" style={{marginLeft:20}} onClick={this.onLeave}>出场</button>
       </div>
       <EnterAnimation interval={this.state.interval} type={this.state.type} upend={this.state.upend} direction={this.state.direction}>
         <div className="demo-header" enter-data={{type: 'alpha'}}>

components/enter-animation/demo/form.md

@@ -45,9 +45,9 @@ var Test = React.createClass({
   render() {
     return (
     <div>
-      <div style={{'margin-bottom':20,'text-align':'center'}}>
+      <div style={{marginBottom:20,textAlign:'center'}}>
         <button className="ant-btn ant-btn-primary" onClick={this.onEnter}>进场</button>
-        <button className="ant-btn ant-btn-primary" style={{'margin-left':20}} onClick={this.onLeave}>出场</button>
+        <button className="ant-btn ant-btn-primary" style={{marginLeft:20}} onClick={this.onLeave}>出场</button>
       </div>
         <form className="ant-form-horizontal">
          <EnterAnimation interval={this.state.interval} type={this.state.type} upend={this.state.upend} direction={this.state.direction} callback={this.state.callback}>