Merge pull request #3 from halower/master

合并

Author: odanzhou

demo/package.json

@@ -9,7 +9,7 @@
   },
   "dependencies": {
     "vue": "^2.5.17",
-    "vue-tree-halower": "^1.7.1"
+    "vue-tree-halower": "^1.7.2"
   },
   "devDependencies": {
     "@vue/cli-plugin-babel": "^3.0.1",

dist/halower-tree.min.css

@@ -1,7 +1,7 @@
 {
   "name": "vue-tree-halower",
   "description": "This tree and treeSelect component is based on the Vue.js 2.0",
-  "version": "1.7.1",
+  "version": "1.7.7",
   "author": "halower (youzisoft@qq.com)",
   "license": "MIT",
   "private": false,