Create an Mbed program that - Outputs a string every time the button is pressed - Blinks LED1 if the button is pressed twice within two seconds - Use time_t seconds = time(NULL) to get current time

Revision:
0:9758d6dc0132
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-os.lib	Thu Nov 29 17:05:46 2018 +0000
@@ -0,0 +1,1 @@
+https://github.com/armmbed/mbed-os/#bf6f2c3c6434a6de9eb9511feffa5948b3d1f20f