USBSerial echo example

Dependencies:   mbed USBDevice

Revision:
6:58aedc90c7e9
Child:
7:6372a14f105d
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Wed Nov 30 11:19:18 2011 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/7110ebee3484