Update travis ci settings

Author: stephenrjohnson

.travis.yml

@@ -1,13 +1,12 @@
 language: ruby
 bundler_args: --without system_tests
 rvm:
-  - 1.9.3
-  - 2.0.0
+  - 2.3.1
 script: "bundle exec rake test"
 env:
   matrix:
-    - PUPPET_GEM_VERSION="~> 3.7.0"
-    - PUPPET_GEM_VERSION="~> 3.7.0" FUTURE_PARSER="yes" STRICT_VARIABLES="no"
-    - PUPPET_GEM_VERSION="~> 3.7.0" FUTURE_PARSER="yes" STRICT_VARIABLES="yes"
-    - PUPPET_GEM_VERSION="~> 4.0.0"
-    - PUPPET_GEM_VERSION="~> 4.0.0" STRICT_VARIABLES="yes"
+    - PUPPET_GEM_VERSION="< 4.0.0"
+    - PUPPET_GEM_VERSION="< 4.0.0" FUTURE_PARSER="yes" STRICT_VARIABLES="no"
+    - PUPPET_GEM_VERSION="< 4.0.0" FUTURE_PARSER="yes" STRICT_VARIABLES="yes"
+    - PUPPET_GEM_VERSION="> 4.0.0"
+    - PUPPET_GEM_VERSION="> 4.0.0" STRICT_VARIABLES="yes"