📝 Update README.md

I was unaware but `gut` joined the homebrew core tap. I updated the README to reflect this.

Author: julien040

README.md

@@ -93,7 +93,7 @@ scoop install gut/gut
 To install gut on macOS, open the Terminal and run
 
 ```bash
-brew tap julien040/gut && brew install gut
+brew install gut
 ```
 
 ### Apt-get

SECURITY.md

@@ -2,14 +2,14 @@
 
 ## Supported Versions
 
-
 | Version | Supported          |
 | ------- | ------------------ |
-| 0.2.x   | :white_check_mark: |
+| 0.3.x   | :white_check_mark: |
+| 0.2.x   | :x:                |
 | 0.1.x   | :x:                |
 
 ## Reporting a Vulnerability
 
-To report a vulnerability, please send an email to [email protected].
+To report a vulnerability, please send an email to [[email protected]]([email protected])
 
 I'll answer as soon as possible.