New ADBRO Bid Adapter Documentation#1

ashvetsov wants to merge 3 commits intomasteradbrome/prebid.github.io:masterfrom

feature/ADBRO-4287-prebidjs-adbro-bid-adapter-dev-docadbrome/prebid.github.io:feature/ADBRO-4287-prebidjs-adbro-bid-adapter-dev-docCopy head branch name to clipboard