.travis.yml in apple_id-0.1.0 vs .travis.yml in apple_id-0.2.0

@@ -1,7 +1,9 @@
 ---
 sudo: false
 language: ruby
 cache: bundler
+before_install: gem install bundler
 rvm:
-  - 2.6.2
-before_install: gem install bundler -v 1.17.2
+  - 2.4.6
+  - 2.5.5
+  - 2.6.2
\ No newline at end of file