'Properties' object passed into the WL.ui method.
The value of the id attribute of the
Specifies the type of button to display. Specify "signin" to display the Live Connect sign-in button. Specify "skydrivepicker" to display the SkyDrive button.
Windows Store apps using JavaScript: not applicable. Web apps: Optional. If the name property is set to "signin", the WL.init function's response_type property is set to "code", and the app uses server-flow authentication, the state object here can be used to track the web app's calling state on the web app server side. For more info, see the description of the state query parameter in the Server-side scenarios topic's "Getting an authorization code" section. http://msdn.microsoft.com/en-us/library/live/hh243649.aspx