Restore correct Copyright

Author: cparata

README.md

@@ -12,7 +12,7 @@ https://github.com/arduino-libraries/ArduinoBLE
 ## License
 
 ```
-Copyright (c) 2019 STMicroelectronics. All rights reserved.
+Copyright (c) 2019 Arduino SA. All rights reserved.
 
 This library is free software; you can redistribute it and/or
 modify it under the terms of the GNU Lesser General Public