title: Upgrade Terraform version
body: <p>I'm start using Terraform and I'm following the project updates on his Github repository.</p>
  
  <p>I see new releases are available on releases section:
  <a href="https://github.com/hashicorp/terraform/releases" rel="noreferrer">https://github.com/hashicorp/terraform/releases</a></p>
  
  <p>I installed Terraform tool following the steps:
  <a href="https://www.terraform.io/intro/getting-started/install.html" rel="noreferrer">https://www.terraform.io/intro/getting-started/install.html</a></p>
  
  <p>The new releases are a zip file with base code but I want to know how I can install it on my computer (OSX). What I downloaded when I installed for the first time was a zip file with just a "terraform" file as unix executable.</p>
  
  <p>How I can generate this Unix executable from the zip available on the github releases section?</p>
  
  <p>Any idea?</p>
  
  <p>Thank you!</p>