Merge pull request #3049 from acmesh-official/dev

sync

README.md

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 # An ACME Shell script: acme.sh [![Build Status](https://travis-ci.org/acmesh-official/acme.sh.svg?branch=master)](https://travis-ci.org/acmesh-official/acme.sh)
 
 <a href="https://opencollective.com/acmesh" alt="Financial Contributors on Open Collective"><img src="https://opencollective.com/acmesh/all/badge.svg?label=financial+contributors" /></a> [![Join the chat at https://gitter.im/acme-sh/Lobby](https://badges.gitter.im/acme-sh/Lobby.svg)](https://gitter.im/acme-sh/Lobby?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
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+acme.sh is being sponsored by the following tool; please help to support us by taking a look and signing up to a free trial
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+<a href="https://tracking.gitads.io/?repo=acme.sh"> <img src="https://images.gitads.io/acme.sh" alt="GitAds"/> </a>
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 - An ACME protocol client written purely in Shell (Unix shell) language.
 - Full ACME protocol implementation.
 - Support ACME v1 and ACME v2