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/mbed.bld	Sat Nov 10 15:22:00 2018 +0000
@@ -0,0 +1,1 @@
+https://os.mbed.com/users/mbed_official/code/mbed/builds/e95d10626187
\ No newline at end of file