title: MiniMagick Gem: How do I create a new blank image without a file?
body: <p>I want to combine two images (one background image, one text image) into one big image.</p>
  
  <p>I believe I have the background image done since it's just based off a file. However, I'm having trouble trying to create an image from scratch. Any tips?</p>
  
  <pre><code>image = MiniMagick::Image.open("public/text_response_bg.png")
  image.combine_options do |i|
    i.size "1024x512"
  end
  
  text = MiniMagick::Image.new #&lt;-- does not work
  text.combine_options do |i|
    i.size "700x200"
    i.gravity 'center'
    i.fill 'white'
    i.caption 'blahblahblah'
  end
  
  result = image.composite(text) do |c|
    c.compose "Over"
    c.geometry "+20+20"
  end
  </code></pre>