Remove Puppet 3 Support

* Update README
* Rework .travis.yml

.travis.yml

@@ -2,15 +2,16 @@
 language: ruby
 
 rvm:
-  - 1.9.3
   - 2.0.0
   - 2.1.9
   - 2.3.1
+  - 2.4.1
 
 env:
   matrix:
     - PUPPET_GEM_VERSION="~> 4.7.0"
     - PUPPET_GEM_VERSION="~> 4.8.0"
+    - PUPPET_GEM_VERSION="~> 4.9.0"
     - PUPPET_GEM_VERSION="~> 4"
 
 sudo: false
@@ -27,33 +28,7 @@ matrix:
   fast_finish: true
   exclude:
     - rvm: 2.0.0
-      env: PUPPET_GEM_VERSION="~> 3.1.0"
-    - rvm: 2.1.9
-      env: PUPPET_GEM_VERSION="~> 3.1.0"
-    - rvm: 2.1.9
-      env: PUPPET_GEM_VERSION="~> 3.2.0"
-    - rvm: 2.1.9
-      env: PUPPET_GEM_VERSION="~> 3.3.0"
-    - rvm: 2.1.9
-      env: PUPPET_GEM_VERSION="~> 3.4.0"
-    - rvm: 2.3.1
-      env: PUPPET_GEM_VERSION="~> 3.1.0"
-    - rvm: 2.3.1
-      env: PUPPET_GEM_VERSION="~> 3.2.0"
-    - rvm: 2.3.1
-      env: PUPPET_GEM_VERSION="~> 3.3.0"
-    - rvm: 2.3.1
-      env: PUPPET_GEM_VERSION="~> 3.4.0"
-    - rvm: 2.3.1
-      env: PUPPET_GEM_VERSION="~> 3.5.0"
-    - rvm: 2.3.1
-      env: PUPPET_GEM_VERSION="~> 3.6.0"
-    - rvm: 2.3.1
-      env: PUPPET_GEM_VERSION="~> 3.7.0"
-    - rvm: 2.3.1
-      env: PUPPET_GEM_VERSION="~> 3.8.0"
-    - rvm: 2.3.1
-      env: PUPPET_GEM_VERSION="~> 3" FUTURE_PARSER="yes"
+      env: PUPPET_GEM_VERSION="~> 4"
 
 notifications:
   email: false

README.md

@@ -3,7 +3,7 @@
 This module manages Ruby and Rubygems.
 
 # Compatibility
-Puppet v3 with Ruby 1.9.3, 2.0.0, 2.1.9 and 2.3.1 on the following platforms.
+Puppet >= 4.7.0 with Ruby 2.1.9 and 2.3.1 on the following platforms.
 
   * Debian 6
   * Debian 7
@@ -17,7 +17,6 @@ Puppet v3 with Ruby 1.9.3, 2.0.0, 2.1.9 and 2.3.1 on the following platforms.
 # Dependencies
 
 * [PuppetLabs stdlib](https://forge.puppetlabs.com/puppetlabs/stdlib)
-* [zleslie pkgng](https://forge.puppetlabs.com/zleslie/pkgng) must be installed for FreeBSD support on Puppet versions < 4.1.0
 
 ## Ruby Class