just a trick to store int8 in protobuf

should limit the maximum image shape latter

commit eb6d0cce
Author: superjom <superjom@gmail.com>
Date:   Mon Dec 25 19:48:28 2017 +0800

    code format

commit 353e1028
Author: superjom <superjom@gmail.com>
Date:   Mon Dec 25 19:47:46 2017 +0800

    restore

some time should wait between read service and get item

* init logdir runs tags and scalars interface

* add debug

* add one mock data

* add dir server

* move frontend to server

* optimizer python package

* add mock data

* add back result encode

* use application/json as Response type

* rm .DS_Store

* update mock tags

* update mock data