chore: revise travis yml to get higher node version

mediumTaj · mediumTaj · commit 22dd52a9a31c · 2018-08-16T16:52:08.000-05:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,7 +1,9 @@
-language: objective-c
-osx_image: xcode61
+language: node_js
 node_js:
 - "8"
+os:
+- osx
+osx_image: xcode61
 rvm:
 - 2.2
 cache:
