README.md: Add LGTM badge

Signed-off-by: Tom Hromatka <tom.hromatka@oracle.com>
Reviewed-by: Kamalesh Babulal <kamalesh.babulal@oracle.com>

diff --git a/README.md b/README.md
index 3b47fe81522a4f9b1217b01755d5d1e0f454c792..74e03526fcee359cb2810e806d45608be86a513f 100644 (file)
--- a/README.md
+++ b/README.md
@@ -1,5 +1,6 @@
 [![Build Status](https://github.com/libcgroup/libcgroup/workflows/Continuous%20Integration/badge.svg?branch=main)](https://github.com/libcgroup/libcgroup/actions)
 [![Coverage Status](https://coveralls.io/repos/github/libcgroup/libcgroup/badge.png)](https://coveralls.io/github/libcgroup/libcgroup)
 [![Doxygen Documentation](https://img.shields.io/badge/Documentation-Doxygen-green.svg)](https://libcgroup.github.io/libcgroup/)
+[![Language grade: C/C++](https://img.shields.io/lgtm/grade/cpp/g/libcgroup/libcgroup.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/libcgroup/libcgroup/context:cpp)
 
 The entire libcgroup README is available [here](README).