modified sentences in library.properties files

(Filtered from arduino/Arduino@b02e85c)

Author: Fede85

library.properties

@@ -0,0 +1,7 @@
+name=SPI
+version=1.0
+author=Arduino
+maintainer=Arduino <info@arduino.cc>
+sentence=Enables the communication with devices that use the Serial Peripheral Interface (SPI) Bus. For all Arduino boards, BUT Arduino DUE. 
+url=http://arduino.cc/en/Reference/SPI
+architectures=avr