[Vala] Request: Some high level documentation about how vala works internally

["Jaap A. Haitsma" <jaap haitsma org>]

Hi,

I think it would be very helpful for potential contributors to have
some high level documentation on how vala works internally
E.g. class diagrams, a description explaining the directory structure,
a description what happens when the vala compiler gets called etc.

Jaap