doc: Add release badge

README.md

@@ -4,6 +4,7 @@ Tool to draw low-resolution graphs in terminal.
 [![Rust](https://github.com/juan-leon/lowcharts/actions/workflows/test.yml/badge.svg)](https://github.com/juan-leon/lowcharts/actions/workflows/test.yml)
 [![codecov](https://codecov.io/gh/juan-leon/lowcharts/branch/main/graph/badge.svg?token=FNTO8M149T)](https://codecov.io/gh/juan-leon/lowcharts)
 [![dependency status](https://deps.rs/repo/github/juan-leon/lowcharts/status.svg)](https://deps.rs/repo/github/juan-leon/lowcharts)
+[![Release](https://img.shields.io/github/release/juan-leon/lowcharts.svg)](https://github.com/juan-leon/lowcharts/releases/latest)
 
 **lowcharts** is meant to be used in those scenarios where we have numerical
 data in text files that we want to display in the terminal to do a basic