message: Add links to windows README
diff: Bitcoin Unlimited
  +=================
  Intro
  -----
  @@ -16,3 +17,11 @@ Bitcoin Unlimited is a fork of the original Bitcoin client and it builds the bac
  However, it downloads and stores the entire history of Bitcoin transactions;
  depending on the speed of your computer and network connection, the synchronization
  process can take anywhere from a few hours to a day or more.
  +
  +
  +Online resources
  +----------------
  +
  +The Bitcoin Unlimited website: https://www.bitcoinunlimited.info/
  +The Bitcoin Forum: https://www.bitco.in/forum
  +
  