Remove SCSS dependency and convert all .scss files into .css.

Author: cjcenizal

README.md

@@ -1,6 +1,6 @@
 # Flexbox Patterns
 
-This repository contains the original SCSS used for the
+This repository contains the original CSS used for the
 components at [www.flexboxpatterns.com](http://www.flexboxpatterns.com).
 Feel free to use these styles however you like!
 
@@ -10,14 +10,11 @@ Assuming you have Node installed, you can install the project dependencies with
 `npm install`. This will install PostCSS and Autoprefixer; two critical tools
 for making your CSS cross-browser compatible.
 
-This project also requires you have [SASS](http://sass-lang.com/) installed
-(`sudo gem install sass`).
-
 ## Commands
 
 `npm run build`
 
-I've chosen to write the styles with SCSS since it's widely adopted and I've
-found that it makes me more productive. This command will compile the SCSS into
-CSS and add various vendor-prefixed properties. Open up `dist/index.html`
-to see a demo page of the various flexbox patterns in the browser.
+This command will concatenate the source CSS files into a single CSS file, and
+then use PostCSS to add various vendor-prefixed properties. Open up
+`dist/index.html` to see a demo page of the various flexbox patterns in the
+browser.