prep for 1.0.0 release

Author: eheydrick

CHANGELOG.md

@@ -4,6 +4,8 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 This CHANGELOG follows the format listed at [Keep A Changelog](http://keepachangelog.com/)
 
 ## [Unreleased]
+
+[1.0.0] - 2017-05-17
 ### Added
 - Support for Ruby 2.3 and 2.4 (@eheydrick)
 

lib/sensu-plugins-datadog/version.rb

@@ -1,8 +1,8 @@
 module SensuPluginsDatadog
   module Version
-    MAJOR = 0
+    MAJOR = 1
     MINOR = 0
-    PATCH = 5
+    PATCH = 0
 
     VER_STRING = [MAJOR, MINOR, PATCH].compact.join('.')
   end