message: Fix OSX build instructions
diff: @@ -60,8 +60,9 @@ NOTE: Building with Qt4 is still supported, however, could result in a broken UI
  1. Clone the qtum source code and cd into `qtum`
  - git clone https://github.com/qtumproject/qtum.git
  + git clone --recursive https://github.com/qtumproject/qtum.git
  cd qtum
  + git submodule update --init --recursive
  2. Build qtum-core:
  