fix: only build node 8

Chris · Chris · commit e96f0759f103 · 2017-10-28T14:41:06.000-07:00
diff --git a/.travis.yml b/.travis.yml
@@ -6,8 +6,6 @@ notifications:
   email: false
 node_js:
   - '8'
-  - '6'
-  - '4'
 before_script:
   - npm prune
 script:
