How to Install Homebrew on Mac OS

Read the website http://brew.sh

Type on your terminal:

ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

output:

Caios-MacBook-Pro:thedatasciencenotebook caiomsouza$ ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
==> This script will install:
/usr/local/bin/brew
/usr/local/Library/...
/usr/local/share/man/man1/brew.1
==> The following directories will be made group writable:
/usr/local/.
/usr/local/include
/usr/local/lib
/usr/local/lib/pkgconfig
/usr/local/share
/usr/local/share/man
/usr/local/share/man/man1
==> The following directories will have their group set to admin:
/usr/local/.
/usr/local/include
/usr/local/lib
/usr/local/lib/pkgconfig
/usr/local/share
/usr/local/share/man
/usr/local/share/man/man1

Press RETURN to continue or any other key to abort
==> /usr/bin/sudo /bin/chmod g+rwx /usr/local/. /usr/local/include /usr/local/lib /usr/local/lib/pkgconfig /usr/local/share /usr/local/share/man /usr/local/share/man/man1
Password:
==> /usr/bin/sudo /usr/bin/chgrp admin /usr/local/. /usr/local/include /usr/local/lib /usr/local/lib/pkgconfig /usr/local/share /usr/local/share/man /usr/local/share/man/man1
==> /usr/bin/sudo /bin/mkdir /Library/Caches/Homebrew
==> /usr/bin/sudo /bin/chmod g+rwx /Library/Caches/Homebrew
==> Downloading and installing Homebrew...
remote: Counting objects: 3641, done.
remote: Compressing objects: 100% (3474/3474), done.
remote: Total 3641 (delta 36), reused 726 (delta 26), pack-reused 0
Receiving objects: 100% (3641/3641), 2.94 MiB | 0 bytes/s, done.
Resolving deltas: 100% (36/36), done.
From https://github.com/Homebrew/homebrew
 * [new branch]      master     -> origin/master
HEAD is now at a1ad7ee dynamips: update homepage
==> Installation successful!
==> Next steps
Run `brew help` to get started