Add:创建 flutter go web 版

lib/widgets/elements/Frame/Spacing/Padding/index.dart

@@ -0,0 +1,44 @@
+ /// Author: 一凨 
+ /// Date: 2018-11-28 20:25:24 
+ /// Last Modified by: 一凨
+ /// Last Modified time: 2019-01-14 17:01:55
+
+import 'package:flutter_web/material.dart';
+
+import 'package:flutter_go/components/widget_demo.dart';
+import './padding_demo.dart';
+
+const contentDesc0='''
+### **简介**
+> widget 内边距
+- 类似于前端中的 div+css:padding 效果
+- Container + padding = Padding
+''';
+
+const  contentDesc1 = '''
+### **基本用法**
+> Padding widget 的padding必须设置，不能为null
+- 通过给定的padding值来隔开子组件
+- 通过EdgeInsets 类来计算 padding的大小
+''';
+class Demo extends StatefulWidget {
+  static const String routeName = '/element/Frame/spacing/Padding';
+  _DemoState createState() => _DemoState();
+}
+
+class _DemoState extends State<Demo> {
+  @override
+  Widget build(BuildContext context) {
+    return WidgetDemo(
+      title: 'Padding',
+      contentList: [
+        contentDesc0,
+        contentDesc1,
+        PaddingDemo()
+      ],
+      docUrl: 'https://docs.flutter.io/flutter/widgets/Padding-class.html',
+      codeUrl:
+          'elements/Frame/Spacing/Padding/padding_demo.dart',
+    );
+  }
+}