This step-by-step was based on Henrique Bastos' article: https://medium.com/@henriquebastos/guia-definitivo-para-organizar-meu-ambiente-python-a16e2479b753
1 - Clone pyenv and plugins repositories:
git clone https://github.com/yyuu/pyenv.git ~/.pyenv
git clone https://github.com/yyuu/pyenv-virtualenv.git ~/.pyenv/plugins/pyenv-virtualenv
git clone https://github.com/yyuu/pyenv-virtualenvwrapper.git ~/.pyenv/plugins/pyenv-virtualenvwrapper