Skip doing any registration calls unless we have a device token or channel id.
Skip doing any registration calls unless we have a device token or channel id.

ipmobiletech/ios-library,mikerowan/ios-library,mikerowan/ios-library,mikerowan/ios-library,grosch/ios-library,manuyavuz/ios-library,grosch/ios-library,ipmobiletech/ios-library,grosch/ios-library,zhangqinghe/ios-library,ipmobiletech/ios-library,manuyavuz/ios-library,zhangqinghe/ios-library,manuyavuz/ios-library,zhangqinghe/ios-library