.travis.yml in brightbox-cli-2.10.0 vs .travis.yml in brightbox-cli-2.11.0

@@ -1,10 +1,11 @@
 language: ruby
 sudo: false
+
 rvm:
   - 1.9
   - 2.0
   - 2.1
   - 2.2
   - 2.3
   - 2.4
-  - 2.5
+  - 2.6