update schema
Merge branch 'master' of https://github.com/81552433qqcom/ebchanges
Merge branch 'master' of https://github.com/81552433qqcom/ebchanges
Merge branch 'master' of https://github.com/81552433qqcom/ebchanges
Merge branch 'master' of https://github.com/81552433qqcom/ebchanges
Merge branch 'master' of https://github.com/81552433qqcom/ebchanges
Merge branch 'master' of https://github.com/81552433qqcom/ebchanges
Merge branch 'master' of https://github.com/81552433qqcom/ebchanges
Merge branch 'master' of https://github.com/81552433qqcom/ebchanges
initial added command and sql script