refine layout name

Author: PanJiaChen

src/layout/Layout.vue renamed to src/layout/index.vue

@@ -4,7 +4,7 @@ import Router from 'vue-router'
 Vue.use(Router)
 
 /* Layout */
-import Layout from '@/layout/Layout'
+import Layout from '@/layout'
 
 /* Router Modules */
 import componentsRouter from './modules/components'

src/router/index.js

@@ -1,6 +1,6 @@
 /** When your routing table is too long, you can split it into small modules**/
 
-import Layout from '@/layout/Layout'
+import Layout from '@/layout'
 
 const chartsRouter = {
   path: '/charts',

src/router/modules/charts.js

@@ -1,6 +1,6 @@
 /** When your routing table is too long, you can split it into small modules**/
 
-import Layout from '@/layout/Layout'
+import Layout from '@/layout'
 
 const componentsRouter = {
   path: '/components',

src/router/modules/components.js

@@ -1,6 +1,6 @@
 /** When your routing table is too long, you can split it into small modules**/
 
-import Layout from '@/layout/Layout'
+import Layout from '@/layout'
 
 const nestedRouter = {
   path: '/nested',

src/router/modules/nested.js

@@ -1,6 +1,6 @@
 /** When your routing table is too long, you can split it into small modules**/
 
-import Layout from '@/layout/Layout'
+import Layout from '@/layout'
 
 const tableRouter = {
   path: '/table',