Auth                    Authorize the RGoogleAnalytics package to the
                        user's Google Analytics Account using OAuth2.0
GetProfiles             Retrieve the list of Profiles for the Google
                        Analytics Account
GetReportData           Query the Google Analytics API for the
                        specified dimensions, metrics and other query
                        parameters
Init                    Initialize the Google Analytics query
                        parameters
ValidateToken           Check whether the Access Token has expired
