Haozun Sun / Mbed OS Accelerometer2_hzsun

I got the structure of the code but did not get every details right

Diff: mbed-os.lib

Revision:
1:31f0f53b08bd
Child:
3:d5c746840139
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-os.lib	Wed Feb 07 16:56:55 2018 +0000
@@ -0,0 +1,1 @@
+https://github.com/armmbed/mbed-os/#caeaa49d68c67ee00275cece10cd88e0ed0f6ed3