Add the ability to run serialboard on multiple accounts.

Readme.md

@@ -12,6 +12,18 @@ First install ruby, then just:
 
 Now copy config.yml.example to config.yml, and edit it to use your Pinboard API key.
 
+## Configuration
+
+Copy the `config.yml.example` to `config.yml` and edit it to use your API token. You can add additional tokens to process multiple accounts as well, e.g.:
+
+```
+- api_token: api_token_2
+  active_tag_name: comics
+  deleted_tag_name: archived
+- api_token: api_token_3
+```
+
+`active_tag_name` and `deleted_tag_name` are optional, and will default to 'serial' and 'serial_deleted', respectively.
 
 ## Usage