Add ability to pass query string to request

[roblesterjr04]

SFDC requires query string of IDs for mass delete capability per docs here https://developer.salesforce.com/docs/atlas.en-us.api_rest.meta/api_rest/resources_composite_sobjects_collections_delete.htm

I tried to work around it but the best solution was to add this logic to your handleRequest and ensure the query key is passed to the Guzzle request.

[roblesterjr04]

Any updates here @omniphx

[omniphx]

Thanks! Sorry for the delay