Update 2013-07-30-from-stupid-to-solid-code.markdown

Great article with great information! Thank you for sharing it!

I rewrote certain sentences to make them read better. I tried to do this without altering what the author was trying to say.
I also expanded the closing remark a bit in an attempt to make it clearer.
Merge pull request #26 from kennyr/patch-1

Update 2013-07-30-from-stupid-to-solid-code.markdown