scope paramter specification
scope parameter consists of an optional, space-separated list of scopes your application is requesting.
If omitted, all scopes will be requested.
For current version, there are folloing scopes:
|Permission to read any resource for the current patient (see notes on wildcard scopes below)
|When launching outside the EHR, ask for a patient to be selected at launch time
refresh_token that can be used to obtain a new access token to replace an expired one, even after the end-user no long is online after the access token rexpires
write access to all resources, by then, we will support
write on specific resource.
For more information, please see SMART on FHIR