thoughtbot/suspenders — pull request #290 by gabebw (2014-02-25 00:03:28+00:00)
Title: Fix i18n validation warning

According to StackOverflow[1], we need to set this explicitly in order to
avoid this warning:

[deprecated] I18n.enforce_available_locales will default to true in the
future. If you really want to skip validation of your locale you can set
I18n.enforce_available_locales = false to avoid this message.

We set it to `true` to future-proof our apps, since that's what the default
will be in the future.

1:
http://stackoverflow.com/questions/20361428/rails-i18n-validation-deprecation-warning