[IMPROVEMENT] Rename README and prepare them for better display in MarkDown editors

I`ve noticed, that you`ve got a README file.
But this README file wasn`t interpreted as markdown file from github.

The following commits renamed the file and changes a little bit the layout to fit for a better display in markdown editors.

The big advantage is the good readbility on github.com.
Here you can see how it looks: https://github.com/andygrunwald/CVSAnalY/blob/markdown-readme/README.md

I`ve changes the email / contributer section a little bit, because there is no support for a "tab spacing environment".