Merge pull request #14 from wowiwj/dev

guzzle7 support

Merge pull request #12 from wowiwj/add-secret

fix sign not match

Merge pull request #10 from wowiwj/add-secret

code reformat

Merge pull request #4 from qbhy/master

支持lumen

update readme

update readme && rename dir

add code annotation

update read me

Update composer.json

update composer