Updated README

README.org

@@ -4,11 +4,14 @@ Simple shell for Unix-like systems written in C, that has a funny name (for germ
 * Features
 - Can run commands
 - You can pipe stdout of one command to stdin of another (ex. ~cat main.c | wc --lines~)
+- Variables expansion with ~$PATH~ and ~${HOME}~ syntax
+- Run subcomands with ~$(hostname)~ or ~`pwd`~ (works with pipes)
 - ~cd~ builtin command (~cd~ without arguments moves you to ~$HOME~)
 - ~exit~ builtin command
 - ~CTRL+C~ stops running command
 - Custom ~readline~ function
-- Run scripts with ~arsh /path/to/script~ or by putting ~#!/usr/bin/env arsh~ at the first line of a script and making it executable.
+- Run scripts with ~arsh /path/to/script~ or by putting ~#!/usr/bin/env arsh~ at the first line of a script and making it executable
+- Run commands with ~arsh -c 'echo $PATH'~ to launch something quickly with ~arsh~.
 * Build
 To build it, you don't need any external dependencies. Example with ~gcc~:
 #+begin_src shell