Add CII Best Practices badge

diff --git a/README.md b/README.md
index 57ae2ca3e0d8151a769c40be1d100ed9dfd46ba2..9df170ea4992bacf32945fd011509949c6838b34 100644 (file)
--- a/README.md
+++ b/README.md
@@ -4,6 +4,7 @@ Ccache – a fast compiler cache
 [![Build Status](https://github.com/ccache/ccache/workflows/Build/badge.svg)](https://github.com/ccache/ccache/actions?query=workflow%3A%22Build%22)
 [![Code Quality: Cpp](https://img.shields.io/lgtm/grade/cpp/g/ccache/ccache.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/ccache/ccache/context:cpp)
 [![Total Alerts](https://img.shields.io/lgtm/alerts/g/ccache/ccache.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/ccache/ccache/alerts)
+[![CII Best Practices](https://bestpractices.coreinfrastructure.org/projects/5057/badge)](https://bestpractices.coreinfrastructure.org/projects/5057)
 [![Gitter](https://img.shields.io/gitter/room/ccache/ccache.svg)](https://gitter.im/ccache/ccache)
 
 Ccache (or “ccache”) is a compiler cache. It [speeds up