Add README

Author: zegl

README.md

@@ -1 +1,25 @@
-# codeball-action
+# Codeball Actions 🔮
+
+**AI-POWERED CODE REVIEW**
+
+**Save time and $$$, use Codeball to perform an early review of all your code.**
+
+* [Online Demo](http://codeball.forfunc.com/)
+
+## Quick Start
+
+1. Create a new file called `.github/workflows/codeball.yml` with the following content:
+
+```yaml
+on: [pull_request]
+
+jobs:
+  codeball_job:
+    runs-on: ubuntu-latest
+    name: Run Codeball
+    steps:
+      - name: Codeball AI Actions
+        uses: sturdy-dev/codeball-action@v1
+```
+
+2. 🎉 That's it! Codeball will now run on your pull requests, and will pre-approve your PR if it's a good one!