Merge pull request #3 from platformsh-templates/update

Update to latest upstream

README.md

@@ -1,5 +1,11 @@
 # Drupal 8 for Platform.sh
 
+<p align="center">
+<a href="https://console.platform.sh/projects/create-project?template=https://raw.githubusercontent.com/platformsh/template-builder/master/templates/drupal8/.platform.template.yaml&utm_content=drupal8&utm_source=github&utm_medium=button&utm_campaign=deploy_on_platform">
+    <img src="https://platform.sh/images/deploy/lg-blue.svg" alt="Deploy on Platform.sh" width="180px" />
+</a>
+</p>
+
 This template builds Drupal 8 using the [Drupal Composer project](https://github.com/drupal-composer/drupal-project) for better flexibility.  It also includes configuration to use Redis for caching, although that must be enabled post-install in `.platform.app.yaml`.
 
 Drupal is a flexible and extensible PHP-based CMS framework.
@@ -22,7 +28,6 @@ The following changes have been made relative to Drupal 8 as it is downloaded fr
 
 * It uses the Drupal Composer project, which allow the site to be managed entirely with Composer. That also causes the `vendor` and `config` directories to be placed outside of the web root for added security.  See the [Drupal documentation](https://www.drupal.org/node/2404989) for tips on how best to leverage Composer with Drupal 8.
 * The `.platform.app.yaml`, `.platform/services.yaml`, and `.platform/routes.yaml` files have been added.  These provide Platform.sh-specific configuration and are present in all projects on Platform.sh.  You may customize them as you see fit.
-* The `.platform.template.yaml` file contains information needed by Platform.sh's project setup process for templates.  It may be safely ignored or removed.
 * An additional Composer library, [`platformsh/config-reader`](https://github.com/platformsh/config-reader-php), has been added.  It provides convenience wrappers for accessing the Platform.sh environment variables.
 * The `settings.platformsh.php` file contains Platform.sh-specific code to map environment variables into Drupal configuration. You can add to it as needed. See the documentation for more examples of common snippets to include here.  It uses the Config Reader library.
 * The `settings.php` file has been heavily customized to only define those values needed for both Platform.sh and local development.  It calls out to `settings.platformsh.php` if available.  You can add additional values as documented in `default.settings.php` as desired.  It is also setup such that when you install Drupal on Platform.sh the installer will not ask for database credentials as they will already be defined.