由于业务要求，需要禁掉蓝牙的系统弹窗
1.从app应用安装到手机，只会弹一次系统弹窗
初始化方式为：
manager = [[CBCentralManageralloc]initWithDelegate:selfqueue:dispatch_get_main_queue()options:nil];
2.每次初始化蓝牙api都会弹框
CBCentralManager*manager = [[CBCentralManageralloc]initWithDelegate:selfqueue:dispatch_get_main_queue()];
3.禁止系统蓝牙弹框
初始化蓝牙api
manager = [[CBCentralManageralloc]initWithDelegate:selfqueue:dispatch_get_main_queue()options:@{}];
options后参数默认为CBCentralManagerOptionShowPowerAlertKey：@（NO）
若CBCentralManagerOptionShowPowerAlertKey对应的value为YES，则效果跟2相同
