Update MSE & EME editor list

[mounirlamouri]

The list at the moment is the following:

MSE

• Matt Wolenetz, Google
• Mark or Greg from Netflix
• Maybe someone from Microsoft

EME

• Joey Parrish, Google
• Mark or Greg from Netflix
• Maybe someone from Microsoft

The Microsoft question is being addressed in #9.

@mwatson2, can you remind me who is going to edit what on the Netflix side?

[mwatson2]

I will stay on as co-editor for MSE and Greg Freedman (gregwf@netflix.com) will take over as co-editor for EME.