CurieBLE: SensorTag example no longer works out of the box

[sandeepmistry]

As discussed in #370 (comment) when BLE.scan() is called no scan response is processed currently.

This causes the central/sensortag_button.ino example to not work as it checks the local name of peripherals and the SensorTag puts on the local name in the scan response.

Maybe we need a short term fix to the example?

[russmcinnis]

this feature appears to work with PR500 (tested with PR475 + PR500)

[sandeepmistry]

This is working for me now with the 2.0.1-rc2.1 JSON @yashaswini-hanji provided us.