file con versione corretta

Dependencies:   HTS221 MQTT

Revision:
0:705a0a684de2
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-os.lib	Thu Jul 26 23:58:14 2018 +0000
@@ -0,0 +1,1 @@
+https://github.com/ARMmbed/mbed-os/#569159b784f70feaa32ce226aaca896fb83452f7