Adds screenshots for all supported targets. Also adds a bit of information to point users to the data files. Change-Id: I5e0f1bcdb73690a14616a3e486228c73b1617ffc
Oops. Apparently I neglected to add this and it's gone unnoticed until now. Change-Id: I938f14c3dfcc4336acca1517988fd096e11ab241