travis: drop node@0.10 and @0.12 and @4

josieusa · josieusa · commit f8b0d715fe3a · 2016-09-09T17:16:49.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,7 +1,4 @@
 sudo: false
 language: node_js
 node_js:
-  - "0.10"
-  - "0.12"
-  - "4"
   - "6"
