Remove 3.0, 3.1, and 2.6 to shrink the test matrix.

Oh, and kill off ruby-head.

Author: Ashley Penney

.travis.yml

@@ -5,36 +5,14 @@ rvm:
   - 1.8.7
   - 1.9.3
   - 2.0.0
-  - ruby-head
 env:
-  - PUPPET_GEM_VERSION="~> 2.6.0"
   - PUPPET_GEM_VERSION="~> 2.7.0"
-  - PUPPET_GEM_VERSION="~> 3.0.0"
-  - PUPPET_GEM_VERSION="~> 3.1.0"
   - PUPPET_GEM_VERSION="~> 3.2.0"
 matrix:
-  allow_failures:
-    - rvm: ruby-head
   exclude:
-    - rvm: 2.0.0
-      env: PUPPET_GEM_VERSION="~> 3.1.0"
-    - rvm: ruby-head
-      env: PUPPET_GEM_VERSION="~> 3.1.0"
-    - rvm: 2.0.0
-      env: PUPPET_GEM_VERSION="~> 3.0.0"
-    - rvm: ruby-head
-      env: PUPPET_GEM_VERSION="~> 3.0.0"
     - rvm: 1.9.3
       env: PUPPET_GEM_VERSION="~> 2.7.0"
     - rvm: 2.0.0
       env: PUPPET_GEM_VERSION="~> 2.7.0"
-    - rvm: ruby-head
-      env: PUPPET_GEM_VERSION="~> 2.7.0"
-    - rvm: 1.9.3
-      env: PUPPET_GEM_VERSION="~> 2.6.0"
-    - rvm: 2.0.0
-      env: PUPPET_GEM_VERSION="~> 2.6.0"
-    - rvm: ruby-head
-      env: PUPPET_GEM_VERSION="~> 2.6.0"
 notifications:
   email: false