title: Ruby: How do I overlay images on top of another WITHOUT Imagemagick?
body: <p>I have an image that is 100 X 100, and want to center it in a blank white image that is 200 X 200. </p>
  
  <p>How would I do so with ImageScience and Ruby, or another third party package? And without ImageMagick nor FreeImage? I know that's very constraining but those 2 are being rather lame to me as both don't work on my local Mac and my EngineYard Amazon instance. I am able to use FreeType with Ruby on my Mac, but it fails to deploy on Amazon cloud. I can't install RMagick on my Mac, but it can install on my Amazon cloud. </p>
  
  <p>As an aside, I feel ImageMagick should be installed automatically in every Linux and Mac machine. Would save some people lots of trouble. So much pain for so little value.</p>