Adding some docs to the library.

README.md

@@ -4,8 +4,36 @@
 
 TODO: Documentation.
 
-The gba ROM is literally a backup of my own cartragide in spanish.
+The save attached is my own save and it is there so you can try the example easily.
 
-I have no rights over the ROM and you should not download or use it if you do
-not have a copy of the same exact cartragide, it is there for debugging purposes
-and it is absolutely not covered by the license of the program.
+## Installation
+
+### Linux
+
+You will need the build-essentials equivalent for your distribution and Perl 5.34.1 or higher.
+
+```
+cpan .
+```
+
+And restart the shell.
+
+## Trying the examples
+
+```
+perl Build.PL
+./Build installdeps
+perl -Ilib examples/all_pokemon_shiny.pl
+```
+
+If you want to try them without installing or
+
+```
+perl examples/all_pokemon_shiny.pl
+```
+
+If you have already installed the library.
+
+## Contributing
+
+You are welcome to contribute whatever you thing it is missing.