Serial passthrough with echo back to PC added - used for testing Emic 2 commands

Dependencies:   mbed

Revision:
0:4c2a5ae75108
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Thu Nov 26 01:48:35 2015 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/9296ab0bfc11
\ No newline at end of file