.travis.yml in m-1.3.4 vs .travis.yml in m-1.4.0

@@ -1,10 +1,12 @@
 rvm:
   - 2.0.0
   - 2.1.0
   - 2.2.0
+  - jruby-1.7.21
 install:
   - bundle install
   - bundle --gemfile=gemfiles/minitest5.gemfile
   - bundle --gemfile=gemfiles/minitest4.gemfile
+  - bundle --gemfile=gemfiles/test_unit_gem.gemfile
 script:
   - bundle exec rake tests