serial print of hello world

Dependencies:   mbed

Revision:
0:b4063bac9af3
diff -r 000000000000 -r b4063bac9af3 mbed.bld
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Wed Feb 13 04:40:04 2019 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/99b5ccf27215
\ No newline at end of file