i2c scanner like arduino i2c sample.

Dependencies:   mbed

Revision:
0:d58e47b3cc7e
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Tue Jun 28 18:29:49 2016 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/6c34061e7c34
\ No newline at end of file