message: Update ppa link from bitcoin-unlimited/+archive/ubuntu/bu-ppa to /~bitcoin-unlimited/+archive/ubuntu/bucash
diff: @@ -73,7 +73,7 @@ If that doesn't work, you can install all boost development packages with:
  sudo apt-get install libboost-all-dev
  -BerkeleyDB is required for the wallet. db4.8 packages are available [here](https://launchpad.net/~bitcoin-unlimited/+archive/ubuntu/bu-ppa).
  +BerkeleyDB is required for the wallet. db4.8 packages are available [here](https://launchpad.net/~bitcoin-unlimited/+archive/ubuntu/bucash).
  You can add the repository and install using the following commands:
  sudo add-apt-repository ppa:bitcoin-unlimited/bu-ppa
  