Prepare 0.4.0 release

CHANGELOG

@@ -1,3 +1,7 @@
+terraform-aws-github-ci-0.4.0 (2017-03-30)
+
+  * Refactored complete code base into TypeScript
+
 terraform-aws-github-ci-0.3.0 (2017-12-03)
 
   * Fixed compatibility errors with Terraform 0.11

README.md

@@ -37,27 +37,39 @@ regardless of how much you use them.
 
 ## Usage
 
+You need an AWS and GitHub account and a repository you want to be built. The
+repository must specify a `buildspec.yml` which is documented [here][2]. First,
+you need to go to the [CodeBuild][3] dashboard in your region, manually create
+a new project and choose GitHub as the **Source provider**, allowing AWS to
+authorize your account.
+
+  [2]: http://docs.aws.amazon.com/codebuild/latest/userguide/build-spec-ref.htm
+  [3]: https://console.aws.amazon.com/codebuild/home
+
 ### Standalone
 
-You need an AWS and GitHub account and a repository you want to be built. The
-repository must specify a `buildspec.yml` which is documented [here][2]. If you
-want to get started straight away and have no experience in Terraform, just
-[set up your AWS credentials][3], [install Terraform][4], clone the repository
-and apply the configuration from the root folder with:
+If you want to get started straight away and have no experience in Terraform,
+just [set up your AWS credentials][4], [install Terraform][5], clone the
+repository and apply the configuration from the root folder with:
 
 ``` bash
 terraform apply \
   -var github_owner=<owner> \
   -var github_repository=<repository> \
   -var github_oauth_token=<oauth-token> \
-  -var namespace=<something-unique-for-you>
+  -var namespace=<unique-identifier>
 ```
 
-The unique namespace is used for naming resources, specifically important for S3 buckets which are globally unique.
+All resources are prefixed with the value specified as `namespace`. If the S3
+bucket name (see below) is not explicitly set, it's set to the given `namespace`
+which means there must not already exist and S3 bucket with the same name.
 
 Now, when you push to `master`, or create a pull request, CodeBuild will
 automatically build the commit and report the status back to GitHub.
 
+  [4]: http://docs.aws.amazon.com/de_de/cli/latest/userguide/cli-chap-getting-started.html
+  [5]: https://www.terraform.io/downloads.html
+
 ### Module
 
 Include and configure this module in your Terraform configuration:
@@ -80,12 +92,9 @@ the terminal.
 
 **Note**: the OAuth-token is currently mandatory, because Terraform doesn't
 support conditional blocks inside resources. However, this feature is currently
-[being implemented][5] and should be released shortly. You need to go to [CodeBuild](https://eu-west-1.console.aws.amazon.com/codebuild/home) in your region, manually start creating a new project and choose GitHub as the **Source provider**, allowing AWS to authorize to your account.
+[being implemented][6] and should be released shortly.
 
-  [2]: http://docs.aws.amazon.com/codebuild/latest/userguide/build-spec-ref.htm
-  [3]: http://docs.aws.amazon.com/de_de/cli/latest/userguide/cli-chap-getting-started.html
-  [4]: https://www.terraform.io/downloads.html
-  [5]: https://github.com/hashicorp/terraform/issues/7034
+  [6]: https://github.com/hashicorp/terraform/issues/7034
 
 ## Configuration
 
@@ -110,7 +119,7 @@ The following variables can be configured:
 
 #### `namespace`
 
-- **Description**: AWS resource namespace/prefix, *only lowercase alphanumeric characters and hyphens allowed*
+- **Description**: AWS resource namespace/prefix (lowercase alphanumeric)
 - **Default**: `"github-ci"`
 
 ### Optional