This sketch demonstrates how add and substract time values using the time span objects

Dependencies:   Hotboards_rtcc mbed

Revision:
0:5e1b09cde0a8
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Hotboards_rtcc.lib	Wed Feb 10 15:49:52 2016 +0000
@@ -0,0 +1,1 @@
+https://developer.mbed.org/users/Hotboards/code/Hotboards_rtcc/#0790bcaf8b8f