.travis.yml in swapus-1.0.0 vs .travis.yml in swapus-1.0.1

@@ -1,11 +1,9 @@
 language: ruby
 dist: precise
 rvm:
   - 2.4.2
   - 2.3.5
-  - 2.2.8
-  - 2.1.10
 install:
   - bundle install
   - gem build swapus.gemspec
   - gem install swapus-$(cat VERSION).gem
 script: