Fixes #6 : Add support for Terraform 0.12

- Migrated to the new TF 0.12 syntax
- Added types for variables
- Updated InSpec version dependency
- Run dockerized tests locally
- Created CHANGELOG.md
- Updated README.md, added latest 0.11 release
- Updated examples
- Untracked files in .gitignore

.gitignore

@@ -1,2 +1,4 @@
 .kitchen/
 .kitchen.local.yml
+Gemfile.lock
+credentials.json

CHANGELOG.md

@@ -0,0 +1,27 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on
+[Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to
+[Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+## [1.0.0] - 2019-YY-ZZ
+
+### Changed
+
+- Supported version of Terraform is 0.12. [#7]
+
+## [0.1.0]
+
+### Added
+
+- Initial release
+
+[Unreleased]: https://github.com/terraform-google-modules/terraform-google-pubsub/compare/v0.1.0...HEAD
+[0.1.0]: https://github.com/terraform-google-modules/terraform-google-pubsub/releases/tag/v0.1.0
+
+[#7]: https://github.com/terraform-google-modules/terraform-google-pubsub/pull/7

Gemfile

@@ -15,5 +15,6 @@
 source 'https://rubygems.org/'
 
 gem 'test-kitchen'
-gem 'kitchen-terraform', '~> 4.0.3'
+gem 'kitchen-terraform', '~> 4.9.0'
 gem 'kitchen-inspec'
+

README.md

@@ -2,6 +2,11 @@
 
 This module makes it easy to create Google Cloud Pub/Sub topic and subscriptions associated with the topic.
 
+## Compatibility
+
+This module is meant for use with Terraform 0.12. If you haven't [upgraded][terraform-0.12-upgrade] and need a Terraform 0.11.x-compatible version of this module, the last released version intended for Terraform 0.11.x
+is [0.2.0][v0.2.0].
+
 ## Usage
 
 This is a simple usage of the module. Please see also a simple setup provided in the example directory.
@@ -30,35 +35,34 @@ module "pubsub" {
 }
 ```
 
-[^]: (autogen_docs_start)
-
+<!-- BEGINNING OF PRE-COMMIT-TERRAFORM DOCS HOOK -->
 ## Inputs
 
 | Name | Description | Type | Default | Required |
 |------|-------------|:----:|:-----:|:-----:|
-| project_id | The project ID to manage the Pub/Sub resources | string | - | yes |
-| pull_subscriptions | The list of the pull subscriptions | list | `<list>` | no |
-| push_subscriptions | The list of the push subscriptions | list | `<list>` | no |
-| topic | The Pub/Sub topic name | string | - | yes |
+| project\_id | The project ID to manage the Pub/Sub resources | string | n/a | yes |
+| pull\_subscriptions | The list of the pull subscriptions | list(map(string)) | `<list>` | no |
+| push\_subscriptions | The list of the push subscriptions | list(map(string)) | `<list>` | no |
+| topic | The Pub/Sub topic name | string | n/a | yes |
 
 ## Outputs
 
 | Name | Description |
 |------|-------------|
 | id | The ID of the Pub/Sub topic |
-| subscription_names | The name list of Pub/Sub subscriptions |
-| subscription_paths | The path list of Pub/Sub subscriptions |
+| subscription\_names | The name list of Pub/Sub subscriptions |
+| subscription\_paths | The path list of Pub/Sub subscriptions |
 | topic | The name of the Pub/Sub topic |
 | uri | The URI of the Pub/Sub topic |
 
-[^]: (autogen_docs_end)
+<!-- END OF PRE-COMMIT-TERRAFORM DOCS HOOK -->
 
 ## Requirements
 
 ### Installation Dependencies
 
-- [terraform](https://www.terraform.io/downloads.html) 0.11.x
-- [terraform-provider-google](https://github.com/terraform-providers/terraform-provider-google) plugin v1.12.x
+- [terraform](https://www.terraform.io/downloads.html) 0.12.x
+- [terraform-provider-google](https://github.com/terraform-providers/terraform-provider-google) plugin v2.7.x
 
 ### Configure a Service Account
 
@@ -159,4 +163,7 @@ are as follows:
 - Golang - gofmt. gofmt comes with the standard golang installation. golang
 -s a compiled language so there is no standard linter.
 - Terraform - terraform has a built-in linter in the `terraform validate` command.
-- Dockerfiles - hadolint. Can be found in homebrew
+- Dockerfiles - hadolint. Can be found in homebrew
+
+[v0.2.0]: https://registry.terraform.io/modules/terraform-google-modules/pubsub/google/0.2.0
+[terraform-0.12-upgrade]: https://www.terraform.io/upgrade-guides/0-12.html