add README.md and clean

Makefile

@@ -22,6 +22,8 @@ ECHO = echoo(){ \
 	fi; \
 };echoo
 
+_default : bonus
+
 all : $(NAME)
 
 bonus :

README.md

@@ -0,0 +1,38 @@
+# cub3d
+
+this is a little kind of video-game i made for 42 school with [ReverseSky on github](https://github.com/ReverseSky). it uses the MinilibX library.
+
+## compile and run
+
+this project only works on linux (it may work on macOS too but you will need to manually add the MinilibX library for macOS).
+
+1. in your terminal, run `make -v`.
+if you have a `command not found` error or equivalent, you will need to install `make`. on ubuntu / debian, run:
+```sh
+$ sudo apt install make
+```
+
+2. clone the repository and cd inside it:
+```sh
+$ git clone https://gitea.zaclys.com/frzysk/42_cub3d
+$ cd 42_cub3d
+```
+
+3. build the game:
+```sh
+$ make
+```
+
+4. run the game:
+```
+$ ./cub3d maps/weirdshape.cub
+```
+(you can use any file inside maps/)
+
+## play
+
+- use arrows, W/A/S/D or Z/Q/S/D to move.
+- you can also click on the window to use the mouse.
+- press ESC to quit.
+
+there is a counter of your moves. try to finish the game with the less moves possible :)