API acknowledgements section update

Wonsuk,

The API acknowledgements section needs to be updated with the new 
arrival of participants in the MAWG. Also caracter the encoding seems wrong
http://dev.w3.org/2008/video/mediaann/mediaont-api-1.0/mediaont-api-1.0.html#acknowledgements

I have updated the acknowledgments section for the Ontology spec
Please use it for the API.

http://dev.w3.org/2008/video/mediaann/mediaont-1.0/mediaont-1.0.html#acknowledgments

attached is the updated acknowledgments entity file used for the Ontology.

Best,
Thierry