Work towards #56: Splitting up the README

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

business-delegate/index.md

@@ -0,0 +1,20 @@
+---
+layout: pattern
+title: Business Delegate
+folder: business-delegate
+categories: pattern_cat
+tags: pattern_tag
+---
+
+**Intent:** The Business Delegate pattern adds an abstraction layer between
+presentation and business tiers. By using the pattern we gain loose coupling
+between the tiers and encapsulate knowledge about how to locate, connect to,
+and interact with the business objects that make up the application.
+
+![alt text](./etc/business-delegate.png "Business Delegate")
+
+**Applicability:** Use the Business Delegate pattern when
+
+* you want loose coupling between presentation and business tiers
+* you want to orchestrate calls to multiple business services
+* you want to encapsulate service lookups and service calls