Disable Travis CI for now, as it doesn't currently work and is causing confusion

.travis.yml

-branches:
-script: "bundle exec rake spec SPEC_OPTS='--format documentation'"
-bundler_args: --without development
-
-rvm:
-- 1.9.3
-- 2.0.0
-- 2.1.5
-- 2.2.0
-env:
-  matrix:
-    - PUPPET_GEM_VERSION="~> 3.2"
-    - PUPPET_GEM_VERSION="~> 3.7"
-