Create README.md

klausbreyer · web-flow · commit fee7d22e37ff · 2017-06-09T08:32:25.000+02:00
Added the requirement of &lt;!DOCTYPE html&gt;` on top of the document. Cost me valueable 30 minutes to figure it out when I just wanted to sketch something rough with the framework.
diff --git a/README.md b/README.md
@@ -19,6 +19,8 @@ $ bower i --save parallax.js
 
 ## Usage
 
+Please note, that `<!DOCTYPE html>` on top of your document is required!
+
 ### Via data attributes
 
 To easily add a parallax effect behind an element, add `data-parallax="scroll"` to the element you want to use, and specify an image with `data-image-src="/path/to/image.jpg"`.
