Replaced `uglify` target on `forceAllTransforms` option

.babelrc

@@ -5,9 +5,9 @@
   "presets": [
     ["@babel/preset-env", {
       "targets": {
-        "node": "4.8",
-        "uglify": true
-      }
+        "node": "4.8"
+      },
+      "forceAllTransforms": true
     }]
   ],
   "plugins": [

.travis.yml

@@ -4,6 +4,7 @@ language: node_js
 node_js:
   - "6"
   - "7"
+  - "8"
   - "9"
   - "stable"