[Article] Metaprogramming in The Wild

Hey!

Some people asked me about practical uses for metaprogramming, so I went
to github and found a few examples from big open-source projects: Rails,
Sinatra & the PaperClip gem.

You can read the article here:
http://www.blackbytes.info/2016/04/metaprogramming-in-the-wild/

Let me know what you think :slight_smile: