[close 3925] Fix version for older Bundler compat
[close 3925] Fix version for older Bundler compat

leonardoprg/devise,rubyrider/devise,leonardoprg/devise,fjg/devise,jnappy/devise,stanhu/devise,ngpestelos/devise,Qwiklabs/devise,fjg/devise,Qwiklabs/devise,jnappy/devise,plataformatec/devise,ngpestelos/devise,rubyrider/devise,plataformatec/devise,stanhu/devise,rubyrider/devise