ble: somehow this comment is needed for go1.8.1 to export this interface. Huh?

Signed-off-by: deadprogram <ron@hybridgroup.com>

platforms/ble/ble_client_adaptor.go

@@ -16,6 +16,7 @@ var currentDevice *blelib.Device
 var bleMutex sync.Mutex
 var bleCtx context.Context
 
+// BLEConnector is the interface that a BLE ClientAdaptor must implement
 type BLEConnector interface {
 	Connect() error
 	Reconnect() error