modified to fix the iOS 7.0 compatibility issue
modified to fix the iOS 7.0 compatibility issue

Since the isConnected method has been deprecated in iOS 7.0, replaced
with the state property

https://developer.apple.com/library/ios/documentation/CoreBluetooth/Refe
rence/CBPeripheral_Class/DeprecationAppendix/AppendixADeprecatedAPI.html

YUKAI/konashi-ios-sdk,YUKAI/konashi-ios-sdk,YUKAI/konashi-ios-sdk,YUKAI/konashi-ios-sdk