feat: readme in spanish

[sesave]

Hello! New features:

• Readme in spanish

[willianrod]

@sesave Thanks for the contribution. Just one little thing, can you add a section adding into the main README linking to the readme in Spanish too? Maybe under the header and above the first section. I was thinking something like this:

## The readme also available in:
- Español
- English
- Português

You don't need to add Portuguese for now, I put it there just to illustrate that the language should not be translated.

[sesave]

Sure! I'll do it tomorrow.

[sesave]

Hello! @willianrod The PR is done with the suggested changes.

I hope it's ok for you now.