update travis configuration to use new code climate reporter

.travis.yml

@@ -5,17 +5,19 @@ rvm:
   - 2.4
   - 2.5
   - 2.6
+before_script:
+  - curl -L https://codeclimate.com/downloads/test-reporter/test-reporter-latest-linux-amd64 > ./cc-test-reporter
+  - chmod +x ./cc-test-reporter
+  - ./cc-test-reporter before-build
 script:
   - travis_wait bundle exec rake
-  - bundle exec codeclimate-test-reporter
+after_script:
+  - ./cc-test-reporter after-build -t simplecov --exit-code $TRAVIS_TEST_RESULT
 notifications:
   email:
     recipients:
       - [email protected]
     on_failure: change
-addons:
-  code_climate:
-    repo_token: 0230b3379581b30743b7b4355d7394e427648e604d19a2aba987956201eee290
 before_install:
   - gem update --system
   - gem update bundler