def unshift(view_or_constant, style=nil, opts = {}, &block)
      opts[:at_index] = 0
      opts[:style] = style
      opts[:block] = block if block
      add_subview view_or_constant, opts
    end
def unshift(view_or_constant, style=nil, opts = {}, &block)
      opts[:at_index] = 0
      opts[:style] = style
      opts[:block] = block if block
      add_subview view_or_constant, opts
    end
Just like append, but inserts the view at index 0 of the subview array

 @return [RMQ]