Add whisker plot

README.md

@@ -148,10 +148,14 @@ You can use the `--export-markdown <file>` option to create tables like the foll
 The JSON output is useful if you want to analyze the benchmark results in more detail. The
 [`scripts/`](https://github.com/sharkdp/hyperfine/tree/master/scripts) folder includes a lot
 of helpful Python programs to further analyze benchmark results and create helpful
-visualizations, like a histogram of runtimes:
+visualizations, like a histogram of runtimes or a whisker plot to comare
+multiple benchmarks:
 
 ![](doc/histogram.png)
 
+![](doc/whisker.png)
+
+
 ## Installation
 
 [![Packaging status](https://repology.org/badge/vertical-allrepos/hyperfine.svg)](https://repology.org/project/hyperfine/versions)