Four initial users:
zhuoc@cs.cmu.edu 0149B2851501001D
wenlu.c.hu@gmail.com 0149C25E0601C019
15821.group7@gmail.com 015DA77218019009
czxxdd@gmail.com 015DB7591501200F

Four initial users:
zhuoc@cs.cmu.edu 0149B2851501001D
wenlu.c.hu@gmail.com 0149C25E0601C019
15821.group7@gmail.com 015DA77218019009
czxxdd@gmail.com 015DB7591501200F

MAC address:
zhuo's glass f8:8f:ca:24:5f:8b
blue glass f8:8f:ca:24:8c:7d

Include device MAC address in Readme
Include device MAC address in Readme
