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

@@ -1,9 +1,15 @@
 language: ruby
 
 rvm:
-  - 2.2.5
-  - 2.3.1
+  - 2.3
+  - 2.4
+  - 2.5
+
+gemfile:
+  - gemfiles/Gemfile.rails42
+  - gemfiles/Gemfile.rails50
+  - gemfiles/Gemfile.rails51
 
 sudo: false
 
 cache: bundler