Add Raindrop.io documentation

README.md

@@ -37,6 +37,9 @@ cp config/_template.yaml config/production.yaml
 # Edit config/production.yaml with your preferred settings
 ```
 
+- `raindrop_token` - [how to create a token?](./docs/raindrop.md#how-to-create-a-token)
+- `raindrop_collection_id` - [how to find a collection ID?](./docs/raindrop.md#how-to-find-a-collection-id)
+
 #### Find YouTube channel ID with the following command:
 
 ```shell

docs/raindrop.md

@@ -0,0 +1,17 @@
+# Raindrop.io
+
+## How to create a token?
+
+1. Login to your Raindrop.io account.
+2. Go to the [integrations page](https://app.raindrop.io/settings/integrations).
+3. In the `For Developers` section, click on the `Create new app` button.
+4. Fill in the name of your app and click on the `Create` button.
+5. Click on the newly created app.
+6. At the bottom, generate a new token.
+
+## How to find a collection ID?
+
+1. Login to your Raindrop.io account.
+2. Add a new collection or click on an existing collection.
+3. The URL will look like `https://app.raindrop.io/my/1234567`.
+4. The collection ID is the number at the end of the URL.