upgrade to nodejs v7.6

eistrati · eistrati · commit 005e347201eb · 2017-02-25T21:14:25.000-05:00
diff --git a/.travis.yml b/.travis.yml
@@ -3,7 +3,7 @@ sudo: false
 node_js:
   - '4.3'
   - '6.9'
-  - '7.5'
+  - '7.6'
 
 cache:
   directories:
