Work towards #56: Splitting up the README

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

resource-acquisition-is-initialization/index.md

@@ -0,0 +1,15 @@
+---
+layout: pattern
+title: Resource Acquisition Is Initialization
+folder: resource-acquisition-is-initialization
+categories: pattern_cat
+tags: pattern_tag
+---
+
+**Intent:** Resource Acquisition Is Initialization pattern can be used to implement exception safe resource management.
+
+![alt text](./etc/resource-acquisition-is-initialization.png "Resource Acquisition Is Initialization")
+
+**Applicability:** Use the Resource Acquisition Is Initialization pattern when
+
+* you have resources that must be closed in every condition