🐛 Pass through stdin to custom typing tool (#19)

Previously, stdin contents were consumed and then not passed through to
the typing tool. With this commit, they are correctly passed to any
custom tool's stdin.

Fixes #19.

README.md

@@ -43,10 +43,10 @@ ln -s bemoji/bemoji /usr/local/bin/bemoji
 
 ### Arch Linux
 
-On Arch Linux, bemoji has been packaged for the [AUR](https://aur.archlinux.org/packages?K=bemoji) so it can be installed manually from here or easily with your preferred AUR helper, e.g.:
+On Arch Linux, bemoji has been packaged for the [AUR](https://aur.archlinux.org/packages/bemoji-git) so it can be installed manually from here or easily with your preferred AUR helper, e.g.:
 
 ```bash
-paru -S bemoji
+paru -S bemoji-git
 ```
 
 ## 💿 Usage