Add Readme

Author: bretterer

.github/images/copyKeyPathDV.png

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+# Paw.cloud Github Actions Secret Dynamic Value
+This plugin allows you to generate the LibSodium encrypted secret from within Paw.
+
+![Paw Usage](./.github/images/pawUsage.png)
+
+
+## Usage
+When creating a request to the github API, you can add this dynamic value extenison to automatically encrypt the secret for the request per the [Github Secrets Documentation](https://docs.github.com/en/free-pro-team@latest/rest/reference/actions#secrets). Follow the steps below to begin making calls through Paw.cloud to generate secrets for your repo.
+
+1. [Get your repo's public key](https://docs.github.com/en/free-pro-team@latest/rest/reference/actions#get-a-repository-public-key)
+![Public Key Request](./.github/images/publicKeyRequest.png)
+2. From the response of the call from step 1, get the dynamic value path for the `key`. Also make note of the dynamic value path for the `key_id`
+![Copy Key Path](./.github/images/copyKeyPathDV.png)
+3. Use the `key` and `key_id` path in the request to create a new secret.
+![Key Path Usage](./.github/images/keyPathUsage.png)
+
+
+## Contributing
+
+### Prerequisites
+```shell
+nvm install
+nvm use
+npm install
+```
+
+### Build
+```shell
+npm run build
+```
+
+### Install
+This will install the paw extension into the default location for paw extensions.
+```shell
+make install
+```
+
+## License
+
+This Paw Extension is released under the [MIT License](LICENSE). Feel free to fork, and modify!
+
+Copyright © 2020 Brian Retterer