copy newsapps' editorconfig into this project

source: https://gist.github.com/rdmurphy/72a3d1e2f89a0e909c10
add big old comment at the top
Add Makefile to .editorconfig

Just had this bite me. You never want spaces in your Makefile, or you're gonna have a bad time.
Merge pull request #8 from texastribune/editorconfig

Add .editorconfig