Remove brew installation. Fixes #105

Author: ekalinin

README.md

@@ -62,11 +62,6 @@ $ curl https://raw.githubusercontent.com/ekalinin/github-markdown-toc/master/gh-
 $ chmod a+x gh-md-toc
 ```
 
-Linux or MacOS (using [homebrew](https://brew.sh/))
-```bash
-$ brew install github-markdown-toc
-```
-
 Linux or macOS (using [Basher](https://github.com/basherpm/basher))
 ```bash
 $ basher install ekalinin/github-markdown-toc