docs: update README

Author: bcomnes

README.md

@@ -6,9 +6,32 @@ You can also use optional parameters `tagRegex` and `tagRegexGroup` to extract a
 
 <a href="https://github.com/little-core-labs/get-git-tag"><img alt="GitHub Actions status" src="https://github.com/little-core-labs/get-git-tag/workflows/Tests/badge.svg"></a>
 
+Forked from [olegtarasov/get-tag](https://github.com/olegtarasov/get-tag) for maintenance.
+
 ## Usage
 
-Dead simple:
+### Pre-requisites
+Create a workflow `.yml` file in your repositories `.github/workflows` directory. An [example workflow](#example-workflow) is available below. For more information, reference the GitHub Help Documentation for [Creating a workflow file](https://help.github.com/en/articles/configuring-a-workflow#creating-a-workflow-file).
+
+### Inputs
+
+```yaml
+tagRegex:
+    description: 'Regex to capture a group text as tag name. Full tag string is returned if regex is not defined.'
+    default: ''
+  tagRegexGroup:
+    description: 'Regex group number to return as tag name.'
+    default: '1'
+```
+
+### Outputs
+
+```yaml
+tag:
+  description: The tag name.
+```
+
+### Example workflow
 
 ```yaml
     steps:
@@ -23,5 +46,26 @@ Dead simple:
       - name: Yet another step # Environment variabl usage example
         run: |
           docker build . --file Dockerfile --tag docker.pkg.github.com/someimage:$GIT_TAG_NAME
+```
+
+## FAQ
+
+### Can you offer a major version tag/branch alias?  I want automatic updates!
 
+Nope!  This was always weird/bad pattern of github actions and I don't have time to maintain or automate that.  Luckily github offers a solution for this.  Create a `.github/dependabot.yml` with, at a minimum, the following config:
+
+```yaml
+# Basic dependabot.yml file with
+# minimum configuration for two package managers
+
+version: 2
+updates:
+  # Enable version updates for npm
+  # Enable updates to github actions
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "daily"
 ```
+
+Furthermore, this action won't be changing much.