README: add codacy code quality badge

[skip ci]

diff --git a/README.md b/README.md
index e75a64ece93d5169df8be18c580a1d6f67e8b651..b540845027bd631cb72cdf52ab77d74fd24c4241 100644 (file)
--- a/README.md
+++ b/README.md
@@ -8,6 +8,7 @@
 [![Backers on Open Collective](https://opencollective.com/curl/backers/badge.svg)](#backers)
 [![Sponsors on Open Collective](https://opencollective.com/curl/sponsors/badge.svg)](#sponsors)
 [![Language Grade: C/C++](https://img.shields.io/lgtm/grade/cpp/g/curl/curl.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/curl/curl/context:cpp)
+[![Codacy Badge](https://api.codacy.com/project/badge/Grade/d11483a0cc5c4ebd9da4ff9f7cd56690)](https://www.codacy.com/app/curl/curl?utm_source=github.com&utm_medium=referral&utm_content=curl/curl&utm_campaign=Badge_Grade)
 
 Curl is a command-line tool for transferring data specified with URL
 syntax. Find out how to use curl by reading [the curl.1 man