add list of projects mentioned by pdfs

grep -oriE 'BRA/[^ ]*' .|grep -oE "[^:]*$"|sed 's:,::g;s:[.]::g;s:)::g;s:\;::g;s:"::g;s:(::g;s:>::g;s:”::g'|sort|uniq > ../../projects_mentioned_in_pdfs.txt