Fixed links in index.md, added history and presentation to repo

Hi,
I added my history part to the index.md and also fixed few links which were html, but are now md (core parts). Also I included the presentation for further use. The license they had was MIT, but I'm not sure about the pictures.

Cheers,
stiller-leser

(Also somehow I messed up the .gitattributes, hope that isn't a problem?)