update: 升级element版本

package.json

@@ -19,7 +19,7 @@
     "animated-vue": "^0.5.3",
     "axios": "^0.18.0",
     "echarts": "^4.8.0",
-    "element-ui": "^2.14.1",
+    "element-ui": "^2.15.6",
     "packele": "^1.0.5",
     "scriptjs": "^2.5.8",
     "tinymce": "^4.9.11",