README.md: Fix the Homebrew command for installing snapshot releases.

2019-02-27 21:57:23 +11:00
parent a4c93c050b
commit 14df80da24
1 changed files with 1 additions and 0 deletions
@@ -42,6 +42,7 @@ brew cask install background-music
 If you want the snapshot version:

 ```bash
+brew tap homebrew/cask-versions
 brew cask install background-music-pre
 ```