WIP: Updates to mds spec
WIP: Updates to mds spec

- based on conversations with @danielballan, @tacaswell, @arkilic

waynelewis/nsls-ii-docs,NSLS-II/docs,danielballan/docs,waynelewis/nsls-ii-docs,danielballan/docs,tacaswell/docs,NSLS-II/docs,NSLS-II-SRX/docs,NSLS-II-SRX/docs