.travis.yml in qbxml-0.3.0 vs .travis.yml in qbxml-0.4.0

@@ -1,6 +1,22 @@
 language: ruby
+
 rvm:
-  - 1.9
   - 2.0
   - 2.1
   - 2.2
+  - 2.3.1
+
+gemfile:
+  - gemfiles/rails_5.0.gemfile
+  - gemfiles/rails_4.2.gemfile
+  - gemfiles/rails_4.1.gemfile
+
+matrix:
+  exclude:
+    - rvm: 2.0
+      gemfile: gemfiles/rails_5.0.gemfile
+    - rvm: 2.1
+      gemfile: gemfiles/rails_5.0.gemfile
+
+before_install:
+  - if ruby --version | cut -d ' ' -f 2 | grep -q 2.1.5p273 ; then gem update --system 2.4.8; fi