Yuki Abe / Mbed 2 deprecated SDcardSpeedTest

Make sure the speed of writing to microSD.

Dependencies:   SDFileSystem mbed

Diff: mbed.bld

Revision:
0:b179d330bb2e
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Tue May 30 04:56:42 2017 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/63cdd78b2dc1
\ No newline at end of file