chore(ci): add 8, drop .10 & .12

ungoldman · ungoldman · commit 28111d5450bb · 2017-06-28T00:24:13.000-07:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,10 +1,8 @@
 language: node_js
 node_js:
-  - '0.10'
-  - '0.12'
   - '4'
-  - '5'
   - '6'
+  - '8'
 cache:
   directories:
     - node_modules
