directory adjust: delete entry index.js

packages/waterfall/directive.js

@@ -1,4 +1,4 @@
-import Utils from '../../utils/scroll.js';
+import Utils from '../utils/scroll';
 
 const CONTEXT = '@@Waterfall';
 const OFFSET = 300;

packages/waterfall/index.js

@@ -1,3 +1,14 @@
-import Waterfall from './src/main.js';
+import Waterfall from './directive.js';
+import Vue from 'vue';
 
+const install = function(Vue) {
+  Vue.directive('WaterfallLower', Waterfall('lower'));
+  Vue.directive('WaterfallUpper', Waterfall('upper'));
+};
+
+if (!Vue.prototype.$isServer) {
+  Vue.use(install);
+}
+
+Waterfall.install = install;
 export default Waterfall;

packages/waterfall/src/main.js

@@ -1,14 +0,0 @@
-import Waterfall from './directive.js';
-import Vue from 'vue';
-
-const install = function(Vue) {
-  Vue.directive('WaterfallLower', Waterfall('lower'));
-  Vue.directive('WaterfallUpper', Waterfall('upper'));
-};
-
-if (!Vue.prototype.$isServer) {
-  Vue.use(install);
-}
-
-Waterfall.install = install;
-export default Waterfall;