How to complete a task in buildr

I could have done something wrong, because I have been using buildr for not so long, so all comments are welcome.

My project structure:

define :proj do
    define :web do
        task :run do
            # runs the web part of the project in a jetty
        end
    end
end

now if i want to start my project i have to enter

buildr proj:web:run

I would just like to dial

buildr run

instead of this. How do I achieve this?