Update README.md (#209)

Author: kevincobain2000

README.md

@@ -50,7 +50,7 @@
 **Using** curl (mac, linux) - recommended
 
 ```sh
-curl -sL https://raw.githubusercontent.com/kevincobain2000/gobrew/master/git.io.sh | sh
+curl -sL https://raw.githubusercontent.com/kevincobain2000/gobrew/master/git.io.sh | bash
 ```
 
 **Using** powershell (windows)