Add testing for Ruby 2.4.1

Author: thomasriley

.github/PULL_REQUEST_TEMPLATE.md

@@ -24,5 +24,5 @@
 
 #### Purpose
 
-#### Known Compatablity Issues
+#### Known Compatibility Issues
 

.travis.yml

@@ -10,6 +10,7 @@ rvm:
 - 2.1
 - 2.2
 - 2.3.0
+- 2.4.1
 notifications:
   email:
     recipients:
@@ -32,4 +33,5 @@ deploy:
     rvm: 2.1
     rvm: 2.2
     rvm: 2.3.0
+    rvm: 2.4.1
     repo: sensu-plugins/sensu-plugins-bigpanda

CHANGELOG.md

@@ -3,4 +3,6 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 
 This CHANGELOG follows the format listed at [Keep A Changelog](http://keepachangelog.com/)
 
-
+## Unreleased
+### Added
+- Add testing for Ruby 2.4.1