[.travis.yml] use node v8 (#4)

petermikitsh · web-flow · commit ecfef30ad58e · 2018-06-01T00:54:24.000-07:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,7 +1,7 @@
 cache: yarn
 language: node_js
 node_js:
-  - "stable"
+  - "8"
 before_script:
   - npm run lint
   - npm run build
