Added organization overview

[Nyholm]

This will fix #2

[cmodijk]

Tnx @Nyholm

[cmodijk]

@Nyholm Could you look at the url syntax it's not parsing the way you intended i think

• http://docs.simplebus.io/en/latest/Introduction/organization-overview.html

[Nyholm]

Oh, that's right. I was using markdown. I'll fix this.