creat client-linux branch

Signed-off-by: huhamhire-hosts <hosts@huhamhire.com>
test
init readme
rename script
addin select menu
update hosts download source
download achieve changed from .tar.gz to .gz
Merge pull request #10 from aguegu/Client-Linux

add menu for ipv4/6 hosts seclection
add backup and restore function
add author notes
update readme
Merge pull request #11 from aguegu/Client-Linux

Add backup and restore functions