Install language

Hi,
I just installed my first shop 2.0.1.1
I want to install the Spanish language and to read the post http://forum.opencart.com/viewtopic.php?f=34&t=132112. I downloaded the package Spanish language. I've dump in the root of my store. But that no longer do. Still appears in English.

Can anyone guide me in installing another language in a Store Opencart 2.0.1.1?

Thanks

1) install opencart (English version)
2)log in to admin,go to
localisation -> Languages -> Language List
You will see all your languages of your opencart store.
click add new button on the top right corner if you want to add a new language.
If you no longer need English language,click edit and set the status to disabled.
Before you add a new language,your language files should be uploaded to
catalog -> Language

That's how I've always done. But it did not work when downloading my language (Spanish) from here: https://crowdin.com/project/opencart
Still appears in English.

Do you know why this happens?

Thanks.