map alias s -> short status

gitconfig

@@ -19,4 +19,5 @@
 	default = simple
 
 [alias]
+	s = status --short --untracked-files=all --branch
 	tree = log --graph --abbrev-commit --decorate --format=format:'%C(red)%h%C(reset)%C(bold red)%d%C(reset) %C(dim green)(%ar)%C(reset) %C(dim white)%s%C(reset) %C(bold black)(%an, %ai)%C(reset)' --all --date=short