mbed UART0 print message

Revision:
0:1d715454a185
diff -r 000000000000 -r 1d715454a185 .gitignore
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/.gitignore	Thu Oct 20 12:36:04 2016 +0000
@@ -0,0 +1,4 @@
+.build
+.mbed
+projectfiles
+*.py*