Install cacert.pem to use SSL calls

Windows

1. Download https://curl.haxx.se/ca/cacert.pem into c:\railsinstaller\cacert.pem. Make sure you save it as a .pem file, rather than a text file.
2. Go to your Computer -> Advanced Settings -> Environment Variables
3. Create a new System Variable:
4. Variable: SSL_CERT_FILE Value: C:\RailsInstaller\cacert.pem
5. Close all your command prompts, including your Rails server command prompt, etc.
6. Start a new ruby irb prompt, and try the following:

• $irb>require 'open-uri'
• $irb>open('https://www.gmail.com')

Linux