Feature => Pre-commit hook

.pre-commit-hooks.yaml

@@ -0,0 +1,9 @@
+- id: helm_docs
+  args: []
+  description: Uses 'helm-docs' to create documentation from the Helm chart's 'values.yaml' file, and inserts the result into a corresponding 'README.md' file.
+  entry: scripts/helm_docs.sh
+  exclude: charts\/.*$
+  files: (Chart\.yaml)$
+  language: script
+  name: Helm docs
+  require_serial: true

README.md

@@ -174,3 +174,14 @@ configMap:
   not real config param: value
 ```
 
+## Pre-commit hook
+
+If you want to automatically generate `README.md` files with pre-commit hook, make sure you have the pre-commit binary installed (instructions here: [https://pre-commit.com/#install](https://pre-commit.com/#install)), and add the following file to your Helm charts repository:
+
+**.pre-commit-config.yaml**
+```yaml
+- repo: https://github.com/norwoodj/helm-docs
+  rev: master
+  hooks:
+    - id: helm_docs
+```