Exception running with no .spin.rb

[lucaspiller]

$ spin serve
/Users/luca/.rvm/gems/ruby-1.9.3-p194/gems/spin-0.5.0/bin/spin:294:in `load': cannot load such file -- .spin.rb (LoadError)
    from /Users/luca/.rvm/gems/ruby-1.9.3-p194/gems/spin-0.5.0/bin/spin:294:in `parse_hook_file'
    from /Users/luca/.rvm/gems/ruby-1.9.3-p194/gems/spin-0.5.0/bin/spin:63:in `serve'
    from /Users/luca/.rvm/gems/ruby-1.9.3-p194/gems/spin-0.5.0/bin/spin:351:in `<top (required)>'
    from /Users/luca/.rvm/gems/ruby-1.9.3-p194/bin/spin:23:in `load'
    from /Users/luca/.rvm/gems/ruby-1.9.3-p194/bin/spin:23:in `<main>'

Just creating an empty file seems to solve it:

$ touch .spin.rb
$ spin serve
Preloaded Rails env in 7.618661s...