Update README.md (#657)

Merge pull request 657

Author: jamiepinheiro

README.md

@@ -133,8 +133,9 @@ Therefore, your `assets/css/style.scss` should contain the following at minimum:
 ---
 ---
 
-@import "minima/skins/{{ site.minima.skin | default: 'classic' }}";
-@import "minima/initialize";
+@import
+  "minima/skins/{{ site.minima.skin | default: 'classic' }}",
+  "minima/initialize";
 ```
 
 #### Skins