GoogleOAuth2-class: A class for managing Google OAuth2 workflow for installed apps
Description
This class is aimed to manage the process where the user
grants Google account access to your R application.
Details
There are two basic ways to create an GoogleOAuth2 object.
First, you can use google.oauth2 to initially register
your application with google. You may store this authentication
information using put. Second, you can use read.google.oauth2
to load authentication information from a previously written file.