remove node versions below 6

tschortsch · tschortsch · commit c5b1e2129b87 · 2018-10-02T20:29:29.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,11 +1,10 @@
 language: node_js
 node_js:
-- '4'
-- '5'
 - '6'
 - '7'
 - '8'
 - '9'
+- '10'
 sudo: false
 deploy:
   provider: npm
