update docs

Author: harjotgill

README.md

@@ -1,10 +1,9 @@
 # ChatGPT based PR reviewer and summarizer
 
-Based on [ChatGPT Action](https://github.com/unsafecoerce/chatgpt-pr-reviewer)
-by [Tao He](https://github.com/sighingnow).
-
 ## Overview
 
+This [ChatGPT](https://platform.openai.com/docs/guides/chat) based GitHub Action provides a summary, release notes and review of pull requests. The prompts have been tuned for concise response. To prevent excessive notifications, this action can be configured to skip adding review comments when the changes look good for the most part.
+
 ### Features
 
 - Code review your pull requests
@@ -51,6 +50,14 @@ jobs:
           review_comment_lgtm: true
 ```
 
+### Screenshots
+
+![PR Summary](./docs/images/chatgpt-pr-summary.png)
+
+![PR Release Notes](./docs/images/chatgpt-pr-release-notes.png)
+
+![PR Review](./docs/images/chatgpt-pr-review.png)
+
 ### Configuration
 
 See also: [./action.yml](./action.yml)
@@ -163,3 +170,10 @@ Set `debug: true` in the workflow file to enable debug mode, which will show the
 
 [1]: https://github.com/marketplace?type=&verification=&query=chatgpt-pr-reviewer+
 [2]: https://www.npmjs.com/package/chatgpt
+
+### Special Thanks
+
+This GitHub Action is based on 
+[ChatGPT Action](https://github.com/unsafecoerce/chatgpt-pr-reviewer)
+by [Tao He](https://github.com/sighingnow).
+

action.yml

@@ -49,7 +49,7 @@ inputs:
     default: https://chat.duti.tech/api/conversation
   review_comment_lgtm:
     required: false
-    description: 'Leave comments even the patch is LGTM'
+    description: 'Leave comments even if the patch is LGTM'
     default: false
   review_beginning:
     required: false