Add travis yaml

This commit adds the travis yaml file to
travis-ci-ify this module

Author: Dan Bode

.travis.yml

@@ -0,0 +1,18 @@
+language: ruby
+rvm:
+  - 1.8.7
+before_script:
+after_script:
+script: "rake spec"
+branches:
+  only:
+    - master
+    - folsom
+    - essex
+env:
+  - PUPPET_VERSION=2.7.13
+  - PUPPET_VERSION=2.7.6
+  - PUPPET_VERSION=2.6.9
+notifications:
+  email: false
+gemfile: .gemfile