Fix the Firmata issue

1. The BLEStream add profile when boot but the HW doesn't be initialized and makes APP crash.
2. Move the add profile at begin after HW complete initial process.

Author: sgbihu

Diff for: libraries/CurieBLE/examples/test/CommunitySketches/StandardFirmataBLE/BLEStream.h

@@ -87,7 +87,10 @@ BLEStream::BLEStream(unsigned char req, unsigned char rdy, unsigned char rst) :
   this->_flushed = 0;
   this->_flushInterval = BLESTREAM_TXBUFFER_FLUSH_INTERVAL;
   BLEStream::_instance = this;
+}
 
+void BLEStream::begin(...)
+{
   addAttribute(this->_uartService);
   addAttribute(this->_uartNameDescriptor);
   setAdvertisedServiceUuid(this->_uartService.uuid());
@@ -96,11 +99,9 @@ BLEStream::BLEStream(unsigned char req, unsigned char rdy, unsigned char rst) :
   this->_rxCharacteristic.setEventHandler(BLEWritten, BLEStream::_received);
   addAttribute(this->_txCharacteristic);
   addAttribute(this->_txNameDescriptor);
-}
-
-void BLEStream::begin(...)
-{
+  
   BLEPeripheral::begin();
+
 #ifdef BLE_SERIAL_DEBUG
   Serial.println(F("BLEStream::begin()"));
 #endif
@@ -240,4 +241,4 @@ void BLEStream::_received(BLECentral& /*central*/, BLECharacteristic& rxCharacte
 }
 
 
-#endif // _BLE_STREAM_H_
+#endif // _BLE_STREAM_H_