message: bitcoind, not bitcoin
diff: @@ -6,7 +6,7 @@ BLOCKSTACK_BRANCH="rc-0.14.2"
  sudo add-apt-repository -y ppa:bitcoin/bitcoin || exit 1
  sudo apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys F76221572C52609D
  sudo apt-get -y update || exit 1
  -sudo apt-get -y install bitcoin || exit 1
  +sudo apt-get -y install bitcoind || exit 1
  # needed on CircleCI's VMs
  pip install --upgrade pip
  