Work towards #56: Splitting up the README

I did the job and splitted up the readme, hopefully everything was
splitted correctly...

property/index.md

@@ -0,0 +1,20 @@
+---
+layout: pattern
+title: Property
+folder: property
+categories: pattern_cat
+tags: pattern_tag
+---
+
+**Intent:** Create hierarchy of objects and new objects using already existing
+objects as parents.
+
+![alt text](./etc/property.png "Property")
+
+**Applicability:** Use the Property pattern when
+
+* when you like to have objects with dynamic set of fields and prototype inheritance
+
+**Real world examples:**
+
+* [JavaScript](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Inheritance_and_the_prototype_chain) prototype inheritance