Quote version numbers in CI config.

goto-bus-stop · goto-bus-stop · commit 2e8663c3e0ad · 2018-06-15T11:46:53.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,13 +1,13 @@
 language: node_js
 node_js:
-  - 9
-  - 8
-  - 6
-  - 4
-  - 0.12
-  - 0.10
-  - 0.8
-  - 0.6
+  - '9'
+  - '8'
+  - '6'
+  - '4'
+  - '0.12'
+  - '0.10'
+  - '0.8'
+  - '0.6'
 before_install:
   - 'nvm install-latest-npm'
 install:
