Merge pull request #48 from niabassey/particle_platform_compatibility

Particle platform compatibility

Author: PaulZC

src/sfe_bus.cpp

@@ -465,6 +465,10 @@ namespace SparkFun_UBLOX_GNSS
     if (length == 0)
       return 0;
 
+#ifdef PARTICLE
+    return _serialPort->readBytes((char *)data, length);
+#else
     return _serialPort->readBytes(data, length);
+#endif
   }
 }