Update README.md

Author: maZahaca

README.md

@@ -2,6 +2,10 @@
 
 This is a GitHub bot that simplifies the process of deployment for organizations from multiple interconnected repositories.
 
+It listens certain [GitHub events](https://docs.github.com/en/developers/webhooks-and-events/events) (pull request, commit) and triggers a new deployment to be created for defined applications.
+
+That allows your dev team to develop and deploy their code to personal dev environments e.g. `https://pull-123.customer-domain.com` managed by Kubernetes.
+
 
 ## Diagram flow
 
@@ -15,6 +19,53 @@ This is a GitHub bot that simplifies the process of deployment for organizations
 3. Follow install instructions inside the bot to conect it to GitHub organization.
 4. Try to make a PR in a repository, that defined in the `config.yaml` file.
 
+## Configuration
+
+Configuration file should be located at: `.infraway/config.yaml`
+
+```yaml
+domain: domain.tech
+
+events:
+  pull_request_opened: "deploy" # or "ignore", deploy by default
+  pull_request_reopened: "deploy" # or "ignore", deploy by default
+  commit: "deploy" # or "ignore", deploy by default
+
+stale_pull_cleanup:
+  enabled: true
+  duration: "7 days"
+
+deploy:
+  - name: repo-name1
+    components:
+      - name: web
+        chart: ./charts/web
+        needs:
+          - static
+        version: commit
+      - name: static
+        version: release
+        repo: repo-name2
+      - name: api
+        chart: ./charts/web.api
+        needs: # a dependency on another component, when deploy happens, both components will be redeployed
+          - db
+        version: commit
+      - name: db
+        version: data
+      - name: mailer
+        addon: true # a component which is not installed by default with push, but can be added by a comment
+        version: release
+
+versions:
+  - name: commit
+    description: latest commit made in the repo (default value)
+  - name: release
+    description: latest release from the repo
+  - name: ^.+$
+    description: predefined version
+```
+
 ## Docker
 
 ```sh