Add description for homebrew

Author: nao1215

Diff for: README.md

@@ -34,6 +34,11 @@ $ go install github.com/nao1215/mimixbox/cmd/mimixbox@latest
 $ sudo mimixbox --install /usr/local/bin
 ```
 
+## Use homebrew
+```shell
+$ brew install nao1215/tap/mimixbox
+```
+
 # Development 
 ## Tools & Libraries
 The table below shows the tools used when developing the commands in the MimixBox project.
@@ -153,4 +158,4 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
 
 <!-- ALL-CONTRIBUTORS-LIST:END -->
 
-This project follows the [all-contributors](https://github.com/all-contributors/all-contributors) specification. Contributions of any kind welcome!
+This project follows the [all-contributors](https://github.com/all-contributors/all-contributors) specification. Contributions of any kind welcome!