.travis.yml in cells-slim-0.0.6 vs .travis.yml in cells-slim-0.1.1

@@ -1,13 +1,11 @@
 language: ruby
 rvm:
-  - 2.4.1
-  - 2.3.3
+  - 2.5.1
+  - 2.4.4
+  - 2.3.7
   - 2.2
-  - 2.1
 
 sudo: false
-
-bundler_args: '--without local_development --jobs 3 --retry 3'
 
 script: bundle exec rake