Merge branch 'master' of https://github.com/Zuohr/mc.git

Change-Id: I4f02ad1f53a1338e4160b3e17f4af7fb56d39253
Signed-off-by: Sirong Chen <sirongc@andrew.cmu.edu>
recommendation part
Merge branch 'master' of https://github.com/Zuohr/mc.git