fix(travis): modernize test

sparanoid · sparanoid · commit 6e2302909bcf · 2018-12-01T18:04:46.000+08:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,5 +1,5 @@
 language: node_js
 node_js:
-  - "0.10"
+  - "10"
 before_script:
-  - npm install -g grunt-cli
+  - npm install -g grunt-cli
