Test on Ruby 2.6

Author: JasonBarnabe

.travis.yml

@@ -6,6 +6,7 @@ rvm:
   - 2.3.8
   - 2.4.8
   - 2.5.7
+  - 2.6.5
 
 gemfile:
   - gemfiles/rails_5.0.gemfile
@@ -24,6 +25,10 @@ matrix:
       gemfile: gemfiles/rails_4.1.gemfile
     - rvm: 2.5.7
       gemfile: gemfiles/rails_4.2.gemfile
+    - rvm: 2.6.5
+      gemfile: gemfiles/rails_4.1.gemfile
+    - rvm: 2.6.5
+      gemfile: gemfiles/rails_4.2.gemfile
 
 before_install:
   - if ruby --version | cut -d ' ' -f 2 | grep -q 2.1.5p273 ; then gem update --system 2.4.8; fi