chore(ci): remove node v6 & 7 (#22)

medfreeman · medfreeman · commit 389fd4b6050f · 2017-09-19T22:33:37.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,8 +1,6 @@
 language: node_js
 node_js:
-- '8'
-- '7'
-- '6'
+  - '8'
 matrix:
   fast_finish: true
 cache:
