Add Thomas Lin Pedersen as author
Add mzID, MSGFplus and MSGFgui to suggest
Added MS-GF+ refs
Add loading of mzID, MSGFplus and MSGFgui
Added MSGFplus as package needing external libraries
Move rTANDEM to own subsubsection
Added subsection on MSGFplus and MSGFgui
Added subsection on mzID
change cols to columns because cols is deprecated