.travis.yml in tcr-0.1.4 vs .travis.yml in tcr-0.2.0

@@ -1,10 +1,11 @@
 language: ruby
 rvm:
-  - "1.9.3"
   - "2.0.0"
-  - "2.1.2"
-  - "2.2.2"
-  - "2.3.1"
+  - "2.1.10"
+  - "2.2.10"
+  - "2.3.7"
+  - "2.4.4"
+  - "2.5.1"
 before_install:
   - gem install bundler
 script: bundle exec rspec