.travis.yml in zoho_hub-0.1.15 vs .travis.yml in zoho_hub-0.1.16

@@ -1,5 +1,5 @@
 sudo: false
 language: ruby
 rvm:
   - 2.5.0
-before_install: gem install bundler -v 1.16.1
+before_install: gem install bundler -v 2.0.1