Update travis config

nason · nason · commit 4f0def1d3b56 · 2018-01-24T00:14:55.000-05:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,8 +1,11 @@
 language: node_js
 node_js:
-  - "stable"
+  - "node"
   - "lts/*"
-  - "4"
+  - "6"
+cache:
+  directories:
+    - "node_modules"
 script:
   - npm run cover
 after_success:
