Update .travis.yml example (home-assistant#3645)

Fogh · fabaff · commit 95fbc2db6149 · 2017-10-16T21:48:14.000+02:00
to test against Python 3.5
diff --git a/source/_docs/ecosystem/backup/backup_github.markdown b/source/_docs/ecosystem/backup/backup_github.markdown
@@ -141,7 +141,7 @@ Example .travis.yml
 ```yaml
 language: python
 python:
-  - "3.4"
+  - "3.5"
 before_install:
   - mv travis_secrets.yaml secrets.yaml
 install:
