Pipes '|' support

- cd without arguments moves to $HOME
- updated README

README.org

@@ -2,11 +2,13 @@
 #+options: toc:nil
 Simple shell for Unix-like systems written in C, that has a funny name (for germans).
 * Features
-- Can run one command at a given time (no | , &&, ||, functions, etc)
-- ~cd~ builtin command
+- Can run commands
+- You can pipe stdout of one command to stdin of another (ex. ~cat main.c | wc --lines~)
+- ~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.
 * Build
 To build it, you don't need any external dependencies. Example with ~gcc~:
 #+begin_src shell