Android BLE 4.3 reconnect error

android 4.3 下重新连接设备会发生异常
参考链接：lianhttp://stackoverflow.com/questions/17870189/android-4-3-bluetooth-low-energy-unstable

修改之后，在发起链接请求中加上错误处理，经测试即可解决该问题

           device.connect(function(){
                 prepareDevice();
            },  connectError);

            connectError: function(msg){
                console.log('connect error ' + msg);
                if(device.platform == 'Android'){
                    BC.Bluetooth.CloseBluetooth(function(){
                        BC.Bluetooth.OpenBluetooth(function(){ console.log('reopened ble')});
                    }, function(){ console.log('cannot close ble')});
                };
            },