.travis.yml in zoho_hub-0.1.56 vs .travis.yml in zoho_hub-0.2.0

@@ -1,5 +1,8 @@
 sudo: false
 language: ruby
 rvm:
-  - 2.5.0
-before_install: gem install bundler -v 2.0.1
+  - 2.1.10
+  - 2.2.10
+  - 2.3.7
+  - 2.4.4
+  - 2.5.3