Fails to work on app/foo where foo is not "views"

[p]

I have an application using https://github.com/kevgo/sections_rails. Trying to run i15r app/sections produces:

/home/rvm/.rvm/gems/ruby-2.0.0-p0/gems/i15r-0.5.1/lib/i15r.rb:43:in `file_path_to_message_prefix': No app. subfolders were found to determine prefix. Path is /home/rvm/apps/foo/app/sections/foo/edit/_edit.html.haml (I15R::AppFolderNotFound)
    from /home/rvm/.rvm/gems/ruby-2.0.0-p0/gems/i15r-0.5.1/lib/i15r.rb:60:in `internationalize_file'
    from /home/rvm/.rvm/gems/ruby-2.0.0-p0/gems/i15r-0.5.1/lib/i15r.rb:80:in `block in internationalize!'
    from /home/rvm/.rvm/gems/ruby-2.0.0-p0/gems/i15r-0.5.1/lib/i15r.rb:80:in `each'
    from /home/rvm/.rvm/gems/ruby-2.0.0-p0/gems/i15r-0.5.1/lib/i15r.rb:80:in `internationalize!'
    from /home/rvm/.rvm/gems/ruby-2.0.0-p0/gems/i15r-0.5.1/bin/i15r:46:in `'
    from /home/rvm/.rvm/gems/ruby-2.0.0-p0/bin/i15r:23:in `load'
    from /home/rvm/.rvm/gems/ruby-2.0.0-p0/bin/i15r:23:in `'
    from /home/rvm/.rvm/gems/ruby-2.0.0-p0/bin/ruby_noexec_wrapper:14:in `eval'
    from /home/rvm/.rvm/gems/ruby-2.0.0-p0/bin/ruby_noexec_wrapper:14:in `'

There should be either a way for me to specify what the app root is, or i15r should determine that by itself, perhaps by traversing the tree up until it finds an "app" directory.