Update tested nodejs versions

gkubisa · gkubisa · commit 15cdd1d3d451 · 2018-07-12T12:24:25.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,7 +1,6 @@
 language: node_js
 node_js:
   - "10"
-  - "9"
   - "8"
   - "6"
 script: "npm run jshint && npm run test-cover"
