Add 'authorizedScope' for actual scope authorized by user

Sources/Base/OAuth2Base.swift

@@ -76,6 +76,12 @@ open class OAuth2Base: OAuth2Securable {
 		set { clientConfig.scope = newValue }
 	}
 
+	/// The scope actually authorized by the endpoint and user.
+	public final var authorizedScope: String? {
+		get { return clientConfig.authorizedScope }
+		set { clientConfig.authorizedScope = newValue }
+	}
+
 	/// The redirect URL string to use.
 	public final var redirect: String? {
 		get { return clientConfig.redirect }

Sources/Base/OAuth2ClientConfig.swift

@@ -38,6 +38,9 @@ open class OAuth2ClientConfig {
 	/// The scope currently in use.
 	open var scope: String?
 
+	/// The scope actrually authorized.
+	open var authorizedScope: String?
+
 	/// The redirect URL string currently in use.
 	open var redirect: String?
 
@@ -186,6 +189,9 @@ open class OAuth2ClientConfig {
 		if let refresh = json["refresh_token"] as? String {
 			refreshToken = refresh
 		}
+		if let scope = json["scope"] as? String {
+			authorizedScope = scope
+		}
 	}
 
 	/**