helps from:
- https://github.com/OpenBazaar/OpenBazaar-Server
- http://stackoverflow.com/questions/24917657/error-while-installing-scrapy
- http://stackoverflow.com/questions/8878676/gcc-error-trying-to-exec-cc1-execvp-no-such-file-or-directory-when-compil
- https://openbazaar.zendesk.com/hc/en-us/articles/207852873-Guide-to-Setting-up-OpenBazaar-Server-on-a-VPS
wget -c https://github.com/OpenBazaar/OpenBazaar-Server/archive/master.zip unzip master.zip cd OpenBazaar-Server-master
yum install libcffi-devel gcc-c++ pip install -r requirements.txt
vim ob.cfg #取消USERNAME PASSWORD 注释并设置，推荐开启SSL
python openbazaar.py start -a 客户端的IP #若客户端IP并不固定，可设置为 0.0.0.0
then open OpenBazaar Client to connect to the server.