feat: correct readme

Signed-off-by: kjuulh <contact@kjuulh.io>

README.md

@@ -8,15 +8,30 @@ Git Now is a utility for easily navigating git projects from common upstream pro
 
 ## Installation
 
-```bash
-cargo (b)install gitnow
+### Homebrew
 
+```bash
+brew tap kjuulh/tap https://git.kjuulh.io/kjuulh/homebrew-tap
+brew install gitnow
+```
+
+### Cargo
+
+```bash
+cargo install gitnow
+# or
+cargo binstall gitnow
+```
+
+### Setup
+
+```bash
 # You can either use gitnow directly (and use spawned shell sessions)
 gitnow
 
 # Or install gitnow scripts (in your .bashrc, .zshrc) this will use native shell commands to move you around
 eval $(gitnow init zsh)
-git-now # Long 
+git-now # Long
 gn # Short alias
 ```