dropped support for Node 4.x because Inquirer no longer supports it

JamesMessinger · JamesMessinger · commit 909c3f745bca · 2017-11-15T09:56:39.000-08:00
diff --git a/.travis.yml b/.travis.yml
@@ -7,8 +7,6 @@ sudo: false
 language: node_js
 matrix:
   include:
-    - node_js: 4
-    - node_js: 5
     - node_js: 6
     - node_js: 7
     - node_js: 8
