Includes the following set of features

• Providing an interface that allows a user to the object ids of text boxes and dataframes that are to be used for updates. This would include being able to insert and remove columns as required in order to get the data in.
• Vignette to provide initial set of code of getting started with rgoogleslides
• Ensuring that rgoogleslides auth function would allow injected .httr-oauth tokens
• Ensuring that rgoogleslides would be able to work with a service account