Revert "Update README.md"

This reverts commit 5998a81.

Author: golangcidev

README.md

@@ -32,18 +32,10 @@ Sponsored by [GolangCI.com](https://golangci.com): SaaS service for running lint
    * [Contact Information](#contact-information)
 
 # Install
-Recommended way to install is:
 ```bash
 go get -u github.com/golangci/golangci-lint/cmd/golangci-lint
 ```
 
-You can also install it by brew:
-```bash
-brew install golangci/tap/golangci-lint
-```
-
-Check the [releases page](https://github.com/golangci/golangci-lint/releases) to fix the version.
-
 # Demo
 Example of output:
 ![Screenshot of sample output](docs/run_screenshot.png)