Update CI (microsoft#28082)

Noel Yoo · sandersn · commit 64091950546f · 2018-10-24T13:21:58.000-07:00
* Use 'node' instead of 'stable'

* Add node 10

* Drop node 8
diff --git a/.travis.yml b/.travis.yml
@@ -1,8 +1,8 @@
 language: node_js
 
 node_js:
-  - 'stable'
-  - '8'
+  - 'node'
+  - '10'
   - '6'
 
 sudo: false
