tree a4a3525d4370cb2e2fc621d34cc716dd459b1a84
parent 1a2b4ccce67d8c8d25ec514a3de61ff546211337
author kongming <kongming.lrq@alibaba-inc.com> 1569296152 +0800
committer kongming <kongming.lrq@alibaba-inc.com> 1569296198 +0800

add demo instruction