RTBKIT-557 added Graphite keys to improve metrics (potentialBiddersPerRequest, bidRequestsSentToBiddersPerRequest, bidsPerBidRequest, numRequestWithBid)
Changed the bidsPerBidRequest Key to use info.stats->bids instead of numValid Bids
Merge pull request #78 from datacratic/rtbkit-557

RTBKIT-557 added Graphite keys to improve metrics (potentialBiddersPerRe...