Revision 2 to MPD specification adds ability to embed images

[Lasse Deleuran]

I am glad that a working example is included in the spec. This is great for people who will implement it. So thanks to all of you for including that. 

This is a rendering of the sample file from the standards page. Would it make sense to have a picture of the sample file on the standards page? That way people can use it to verify that their own implementation is correct.