Remove Rails version mention from the initializer template.
Remove Rails version mention from the initializer template.

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