Update changelog for release v1.0.0

Author: nbering

CHANGELOG.md

@@ -5,6 +5,8 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+
+## [1.0.0] - 2018-05-05
 ### Changed
 - Update dependencies for Terraform v0.12-beta2 - breaking due to plugin version change
 
@@ -23,7 +25,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 ### Fixed
 - Releases going forward will have correct binary name for Terraform installation (fixes [#2](https://github.com/nbering/terraform-provider-ansible/issues/2))
 
-[Unreleased]: https://github.com/nbering/terraform-provider-ansible/compare/v0.0.4...HEAD
+[Unreleased]: https://github.com/nbering/terraform-provider-ansible/compare/v1.0.0...HEAD
+[1.0.0]: https://github.com/nbering/terraform-provider-ansible/compare/v0.0.4...v1.0.0
 [0.0.4]: https://github.com/nbering/terraform-provider-ansible/compare/v0.0.3...v0.0.4
 [0.0.3]: https://github.com/nbering/terraform-provider-ansible/compare/v0.0.2...v0.0.3
 [0.0.2]: https://github.com/nbering/terraform-provider-ansible/compare/v0.0.1...v0.0.2