Change project structure

[afeena]

I don't like that all the files into the root of the project. Maybe we should make the project structure better: for example, move emulators into emulators/handlers folder, change naming and so on

[glaslos]

Works for me. But keep the structure flat. E.g. in Glastopf, every thing is very difficult to find.

[afeena]

I make the first steps for structure changing #78. Can you please give me some feedback about structure and setup?

[glaslos]

Done with #78