Added the homebrew live to install the cask fonts repository

Home.md

@@ -18,7 +18,8 @@ Windows:
 Mac:
 
 - in the ttf folder, select all font files, click “Install font”
-- or use [brew](http://brew.sh) and [cask](https://caskroom.github.io): `brew cask install font-fira-code` (not officially supported, might install outdated version)
+- or use [brew](http://brew.sh) and [cask](https://caskroom.github.io): `brew tap caskroom/fonts
+brew cask install font-fira-code` (not officially supported, might install outdated version)
 
 Linux: 
 - in the ttf folder, double-click each font file, click “Install font”