Update readme to include homebrew and condense aftman/rokit

Author: jackTabsCode

README.md

@@ -14,16 +14,17 @@ Asphalt is a simple CLI tool used to upload assets to Roblox and easily referenc
 
 ## Installation
 
-### [Aftman](https://github.com/lpghatguy/aftman)
+### [Homebrew](https://brew.sh) (macOS/Linux)
 
 ```sh
-aftman add jacktabscode/asphalt
+brew tap jacktabscode/tap
+brew install asphalt
 ```
 
-### [Rokit](https://github.com/rojo-rbx/rokit)
+### [Aftman](https://github.com/lpghatguy/aftman) or [Rokit](https://github.com/rojo-rbx/rokit)
 
 ```sh
-rokit add jacktabscode/asphalt
+aftman add jacktabscode/asphalt
 ```
 
 ### [Cargo](https://crates.io/crates/asphalt) (build from source)