COVID：WHO新冠疫情数据大盘

make            # 如果本地数据可用
make all        # 完整安装，从WHO官网下载数据
makd reload     # 重新下载并加载最新数据 

make reload     # download latest data and pour it again
make ui         # install grafana dashboards
make sql        # install database schemas
make download   # download latest data
make load       # load downloaded data into database
make reload     # download latest data and pour it into database