Fix: Change title of README to actual library name. (#54)

Author: aentinger

README.md

@@ -1,7 +1,7 @@
 <img src="https://content.arduino.cc/website/Arduino_logo_teal.svg" height="100" align="right" />
 
-`Braccio++`
-===========
+`Arduino_Braccio_plusplus`
+==========================
 
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