Recommended directory structure

[pixelbrackets]

As written in the summary this repository “provides an initial directory structure and files to document Architectural Decisions using Markdown and Architectural Decision Records.”

The files (= the template) are explained in the README, the directory structure however is not. It's just presumed in the section Create a new ADR.
It would be nice to explain that the directory structure uses NNNN-title-with-dashes.md format and why it does so (other ADRs styles for example recommend using YYYY-MM-DD Title without Dahes or YYYY-MM-DD-title-with-dashes, so this difference should be explained somewhere).

[koppor]

We removed the "initial directory structure" at 23a9277, because we want to use MADR for ourselves to document decisions taken at MADR. This update was missing updating the README.md completely. I fixed that in c62a716.