def thumbnail!
      begin
        image = MiniMagick::Image.open(@file.path)
        image.resize("#{Pushfile.settings[:images][:thumb][:width]}x")
      rescue
        @thumb = nil
      else
        t = @name.split('.'); ext = t.pop
        @thumb = t.join(".").concat("_thumb.#{ext}")
        image.write("/tmp/#{@thumb}") rescue @thumb = nil
      end
    end
def thumbnail!
      begin
        image = MiniMagick::Image.open(@file.path)
        image.resize("#{Pushfile.settings[:images][:thumb][:width]}x")
      rescue
        @thumb = nil
      else
        t = @name.split('.'); ext = t.pop
        @thumb = t.join(".").concat("_thumb.#{ext}")
        image.write("/tmp/#{@thumb}") rescue @thumb = nil
      end
    end
Create thumbnail, same name but with _thumb at the end