Modify the DISCO-Sensors example so that the press of the button changes the sensor being read

Dependencies:   BSP_B-L475E-IOT01 mbed

Revision:
2:b677fab4e408
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/BSP_B-L475E-IOT01.lib	Sat Nov 10 15:22:00 2018 +0000
@@ -0,0 +1,1 @@
+http://developer.mbed.org/teams/ST/code/BSP_B-L475E-IOT01/#9dfa42666f03