Added README

README.org

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+#+title: arsh - ARchaic SHell
+#+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
+- ~exit~ builtin command
+* Build
+To build it, you need ~readline~ library. Then use
+#+begin_src shell
+gcc main.c -O3 -lreadline -o arsh
+#+end_src