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README.md

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+# PR Unlabeler
+
+by FastRuby.io
+
+# How to:
+
+If you want to remove the `ready-to-qa` label when the `ready-to-merge` label is added to a PR:
+
+```yml
+# .github/workflows/unlabel.yml
+
+name: Unlabel
+on:
+  pull_request:
+    types: [labeled]
+
+jobs:
+  create-review-app:
+    if: ${{ github.event.label.name == 'ready-to-merge' }}
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: fastruby/pr-unlabeler@v1
+        with:
+          label-to-remove: "ready-to-qa"
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+```
+
+# Configuration
+
+## Inputs:
+
+### `label-to-remove`
+
+Any string that would match a valid label in the repo.
+
+# How to contribute:
+
+- Run `npm install` to get the needed dependencies
+- Before committing changes, remember to rebuild the final .js file with `npm run prepare`
+- Always commit the `dist/*` files
+- After pushing the changes, make a new release in GitHub so you can target that version in the workflow config
+
+> To show debug messages in the action's log, you can add a repo secret with the key `ACTIONS_STEP_DEBUG` and the value `true`
+
+TODO:
+
+- Only allow interactions of collaborators to trigger the actions to prevent abuse.
+- Add linter/prettier