fix travis to node 10

rwieruch · rwieruch · commit 7e7a6905a85b · 2018-12-06T19:32:29.000+08:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,10 +1,10 @@
 language: node_js
 
 node_js:
-  - stable
+  - '10'
 
 install:
   - npm install
 
 script:
-  - npm test
+  - npm test
