Updated action yaml file and readme

Author: githubofkrishnadhas

README.md

@@ -1,7 +1,41 @@
 # github-access-using-githubapp
 github-access-using-githubapp
 
+Once your GitHub App is installed on an account, you can make it authenticate as an app installation for API requests.
+This allows the app to access resources owned by that installation, as long as the app was granted the necessary repository access and permissions.
+API requests made by an app installation are attributed to the app.
 
-# Reference
+# Parameters of action
+| Parameter name | Description | Required           |
+|----------------|-------------|--------------------|
+| github_app_private_key | Github App Private key | :heavy_check_mark: |
+| github_app_id | Your GitHub App ID | :heavy_check_mark: |
+| github_account_type | Github account whether `user` account or `organization` | :heavy_check_mark: |
 
-[generating-an-installation-access-token](https://docs.github.com/en/apps/creating-github-apps/authenticating-with-a-github-app/generating-an-installation-access-token-for-a-github-app#generating-an-installation-access-token)
+* Store your `Github App Id` and `Github App Private key` as github secret and pass the secret names as inuts for action.
+
+# What's New
+
+Please refer to the [release](https://github.com/githubofkrishnadhas/github-access-using-githubapp/releases) page for the latest release notes.
+
+# Usage
+```commandline
+- uses: githubofkrishnadhas/github-access-using-githubapp@v1
+  with:
+    # Your GitHub App ID - interger value
+    github_app_id: 1234567
+
+    # Github App Private key 
+    github_app_private_key : ''
+
+    # Gituhb account type `user` or `organization` only
+    github_account_type: ''
+```
+
+# References
+
+[generating-an-installation-access-token](https://docs.github.com/en/apps/creating-github-apps/authenticating-with-a-github-app/generating-an-installation-access-token-for-a-github-app#generating-an-installation-access-token)
+[get-a-user-installation-for-the-authenticated-app](https://docs.github.com/en/rest/apps/apps?apiVersion=2022-11-28#get-a-user-installation-for-the-authenticated-app)
+[get-a-repository-installation-for-the-authenticated-app](https://docs.github.com/en/rest/apps/apps?apiVersion=2022-11-28#get-a-repository-installation-for-the-authenticated-app)
+
+All the above API's uses [JWT](https://docs.github.com/en/apps/creating-github-apps/authenticating-with-a-github-app/about-authentication-with-a-github-app#authenticating-as-a-github-app) as access token.

action.yml

@@ -12,4 +12,5 @@ runs:
   image: 'Dockerfile'
   args:
     - ${{ inputs.github_app_id }}
-    - ${{ inputs.github_app_private_key }}
+    - ${{ inputs.github_app_private_key }}
+    - ${{ inputs.github_account_type }}