chore: add details to the readme (#23)

* chore: add details to the readme

Clarify the steps required in order to set this up.

* fix(readme): remove `v` prefix from release

As the release is named `1.0.0` the example in the readme will fail to fetch `v1.0.0`.

Co-authored-by: Sebastian Holmqvist <csholmq@users.noreply.github.com>

README.md

@@ -18,15 +18,15 @@ Notion Board
 ## Introduction 
 This action lets you sync your GitHub issue with your notion board. Currently it syncs issue state and labels. 
 
-> More feature on the way.
+> More features on the way.
 
 ## Inputs
 
 |input|description|required|
 |-----|-----------|--------|
 |`NOTION_API_KEY`|your notion api key|`true`|
 |`NOTION_DATABASE`|your notion database id|`true`|
-|`GITHUB_TOKEN`|your github token|`true`|
+|`GITHUB_TOKEN`|your github token|`true`| (automatically created)
 
 ## Usage
 ```yml
@@ -40,18 +40,22 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - name: Notion Board
-        uses: Souvikns/Notion-Board@v1.0.0
+        uses: Souvikns/Notion-Board@1.0.0
         env: 
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           NOTION_API_KEY: ${{ secrets.NOTION_API_KEY }}
           NOTION_DATABASE: ${{ secrets.NOTION_DATABASE }}
 ```
 
-As of now notion API does not allow creating or changing properties, so right now you have to add these properties manually to use this action. 
+Start with [setting up an integration and sharing your Notion database](https://developers.notion.com/docs/getting-started) with the integration.
+
+After setting up your workflow, add your `NOTION_API_KEY` and `NOTION_DATABASE` secrets to your repository.
+
+As of right now notion API does not allow creating or changing properties, meaning you have to **add these properties manually** to your database in order to use this action. 
 - URL - type: `URL`
 - id - type: `Number`
 - state - type: `Select`
-- labels - type: `Mutli-Select`
+- labels - type: `Multi-Select`
 
 ## Screenshot
 ![board](./screenshots/notion-board.PNG)