[change] optimize the webapack config

[change] rename test to examples

examples/routers/tree.vue

@@ -0,0 +1,41 @@
+<template>
+    <div>
+        <Tree :data="baseData" show-checkbox></Tree>
+        <div @click="c">change</div>
+    </div>
+</template>
+<script>
+    export default {
+        data () {
+            return {
+                baseData: [{
+                    expand: true,
+                    title: 'parent 1',
+                    children: [{
+                        title: 'parent 1-0',
+                        expand: true,
+                        disabled: true,
+                        children: [{
+                            title: 'leaf',
+                            disableCheckbox: true
+                        }, {
+                            title: 'leaf',
+                        }]
+                    }, {
+                        title: 'parent 1-1',
+                        expand: true,
+                        checked: true,
+                        children: [{
+                            title: '<span style="color: red">leaf</span>'
+                        }]
+                    }]
+                }]
+            }
+        },
+        methods: {
+            c () {
+                this.baseData[0].expand = false;
+            }
+        }
+    }
+</script>