Update README.md

Update README.md

README: restyle after VBVR-Pro cards (badges, abstract, at-a-glance, layout tree)

Card: release date; run dates removed

Card: 4,197 answers; provenance wording; marked_envelopes_swap rename note; 90-frame conditioning; citation

Card: exam now lives here

Add the 300-question exam (eval/, moved from Hokin/object-permanence) (part 5)

Add the 300-question exam (eval/, moved from Hokin/object-permanence) (part 4)

Add the 300-question exam (eval/, moved from Hokin/object-permanence) (part 3)

Add the 300-question exam (eval/, moved from Hokin/object-permanence) (part 2)

Add the 300-question exam (eval/, moved from Hokin/object-permanence)

card: link to the code repository

Add files using upload-large-folder tool

Add files using upload-large-folder tool

Add files using upload-large-folder tool

Add files using upload-large-folder tool

Add files using upload-large-folder tool

Add files using upload-large-folder tool

Add files using upload-large-folder tool

Add files using upload-large-folder tool

Add files using upload-large-folder tool

Add files using upload-large-folder tool

Add files using upload-large-folder tool

Add files using upload-large-folder tool

initial commit