fix: use latest node to run tests

Author: gajus

.babelrc

@@ -1,14 +1,19 @@
 {
-    "presets": [
-        "es2015",
-        "stage-0",
-        "react"
+  "plugins": [
+    "add-module-exports",
+    "lodash",
+    "transform-class-properties",
+    [
+      "transform-es2015-classes",
+      {
+        "loose": true
+      }
     ],
-    "plugins": [
-        "add-module-exports",
-        "lodash",
-	"transform-class-properties",
-	["transform-es2015-classes", { "loose": true }],
-	"transform-proto-to-assign"
-    ]
+    "transform-proto-to-assign"
+  ],
+  "presets": [
+    "es2015",
+    "stage-0",
+    "react"
+  ]
 }

.travis.yml

@@ -1,8 +1,7 @@
 language: node_js
 node_js:
-  - 7
-  - 6
-  - 5
+  - node
+  - 8
 before_install:
   - npm config set depth 0
 notifications: