title: Ruby on Rails environment variable for development environment
body: <p>Just a quick question to which I couldn't find an answer on stackoverflow. </p>
  
  <p>If it is easy to have environment variable for staging and production (on heroku for example), how can I set environment variable for my localhost (development environment)? (I am on a mac)</p>
  
  <p>As of today I hardcode my api credential for development environment and I don't feel comfortable with that. </p>
  
  <p>Thanks !</p>