Rather than customizing these files directly, I think we can create a ````client.en-udacity.rb```` file here with the following contents (Rails supports both yml and rb files for localization - http://guides.rubyonrails.org/i18n.html):

````
require 'yaml'

result = YAML.load_file(File.join(File.dirname(__FILE__), 'client.en.yml'))

raise Error unless result['en']['js']['user']['bio'] == 'About me'
result['en']['js']['user']['bio'] = 'Forum Bio'
....

result
````

This fakes inheritance between translation files.