Added some text to support the triage section. Information on vulnerability types and escallations to go along with the matrix that's already there.

Not much I can do about the spelling of the topic...

Change-Id: If7b4f5a93f95c225690b79a82f28175f49af9dbb
Merge "Added some text to support the triage section. Information on vulnerability types and escallations to go along with the matrix that's already there."