.travis.yml in mrkt-1.0.1 vs .travis.yml in mrkt-1.1.0

@@ -5,9 +5,10 @@
 language: ruby
 rvm:
   - 2.5
   - 2.6
   - 2.7
+  - 3.0
 before_install:
   - gem update --system
   - bundle update --bundler
 before_script:
   - curl -L https://codeclimate.com/downloads/test-reporter/test-reporter-latest-linux-amd64 > ./cc-test-reporter