.travis.yml in capistrano-env-0.3.3 vs .travis.yml in capistrano-env-1.0.0

@@ -1,10 +1,13 @@
 language: ruby
+sudo: false
+cache: bundler
 rvm:
-  - 2.1.5
-  - 2.2.1
-gemfile:
-  - gemfiles/cap3.gemfile
-  - gemfiles/cap2.gemfile
+  - 2.3.7
+  - 2.4.4
+  - 2.5.1
+before_install:
+  - gem update --system --no-document
+  - gem i bundler
 script:
-  - bundle exec rake spec
   - bundle exec rubocop
+  - bundle exec rake spec