docs: add a basic README

Author: Phosphorus-M

README.md

@@ -0,0 +1,10 @@
+# Rust para Go Devs
+
+Libro ✨
+
+Para ejecutar:
+
+```sh
+cargo install mdbook --git https://github.com/RustLangES/mdBook.git
+mdbook serve --language es
+```