Merge pull request AdobeDocs#86 from oshmyheliuk/ece-tools-release

Instruction on how to install ece-tools from git

Author: keharper

src/pages/webhooks/installation.md

@@ -27,7 +27,7 @@ The following steps apply to both Adobe Commerce on cloud infrastructure and on-
    bin/magento module:enable --all
    ```
 
-## On-premise installation
+## On-premises installation
 
 1. Run the following command to initialize the `AdobeCommerceWebhookPlugins` module. This module consists of generated plugins based on a list of subscribed webhooks.
 
@@ -65,6 +65,25 @@ Use the following steps to perform additional configuration for Adobe Commerce o
 
 1. Run the `composer info magento/ece-tools` command to determine your version of ece-tools. If the version is less than `2002.1.16`, [update to the most recent version](https://experienceleague.adobe.com/docs/commerce-cloud-service/user-guide/dev-tools/ece-tools/update-package.html).
 
+   If the ece-tools version `2002.1.16` is not available yet, install the `develop` branch from git.
+
+   Add the following to the `repositories` section of your `composer.json` file:
+
+   ```json
+      "ece-tools": {
+         "type": "git",
+         "url": "git@github.com:magento/ece-tools.git"
+      },
+   ```
+
+   Add the following to the `require` section of your `composer.json`:
+
+   ```json
+      "magento/ece-tools": "dev-develop as 2002.1.16",
+   ```
+
+   Run the `composer update` command.
+
 1. Enable webhooks in the `.magento.env.yaml` file:
 
    ```yaml