Shopify/active_merchant — pull request #626 by klebervirgilio (2013-03-20 14:51:57+00:00)
Title: Add secure source to Gemfile

Add secure source to Gemfile.

And avoid this message:

```
The source :rubygems is deprecated because HTTP requests are insecure.
Please change your source to 'https://rubygems.org' if possible, or 'http://rubygems.org' if not.
```