.travis.yml in busser-bats-0.2.0 vs .travis.yml in busser-bats-0.3.0

@@ -1,11 +1,34 @@
 language: ruby
 
 rvm:
-- 2.0.0
-- 1.9.3
-- 1.9.2
-- ruby-head
+  - 2.1
+  - 2.0.0
+  - 1.9.3
+  - ruby-head
 
+env:
+  - RUBYGEMS_VERSION=
+  - RUBYGEMS_VERSION=2.2.2
+  - RUBYGEMS_VERSION=2.1.11
+  - RUBYGEMS_VERSION=2.0.14
+  - RUBYGEMS_VERSION=1.8.29
+
+bundler_args: --without guard
+
+before_install:
+  - if [ -n "$RUBYGEMS_VERSION" ]; then gem update --system $RUBYGEMS_VERSION; fi
+  - gem --version
+
 matrix:
+  exclude:
+    - rvm: 2.1
+      env: RUBYGEMS_VERSION=1.8.29
+    - rvm: 2.0.0
+      env: RUBYGEMS_VERSION=1.8.29
+    - rvm: ruby-head
+      env: RUBYGEMS_VERSION=1.8.29
   allow_failures:
-  - rvm: ruby-head
+    - rvm: ruby-head
+
+notifications:
+  irc: "chat.freenode.net#kitchenci"