message: Add notification to startup instructions concerning master
diff: @@ -72,8 +72,12 @@ The second optional input can be `full` or `build` where `full` implies that it
  ```
  Choose whether you will be building for a local testnet or for the public testnet and jump to the appropriate section below. Clone the EOS repository recursively as described and run build.sh located in the root `eos` folder.
  +:warning: **As of February 2018, `master` is under heavy development and is not suitable for experimentation.** :warning:
  +
  +We strongly recommend following the instructions for building the public testnet version. `master` is in pieces on the garage floor while we rebuild this hotrod. This notice will be removed when `master` is usable again. Your patience is appreciated.
  +
  <a name="autoubuntulocal"></a>
  -#### Clean install Ubuntu 16.10 for a local testnet
  +#### :no_entry: Clean install Ubuntu 16.10 for a local testnet :no_entry:
  ```bash
  git clone https://github.com/eosio/eos --recursive
  @@ -98,7 +102,7 @@ git checkout dawn-2.x
  Now you can proceed to the next step - [Running a node on the public testnet](#publictestnet)
  <a name="automaclocal"></a>
  -#### MacOS Sierra for a local testnet
  +#### :no_entry: MacOS Sierra for a local testnet :no_entry:
  Before running the script make sure you have updated XCode and brew:
  @@ -107,7 +111,7 @@ xcode-select --install
  ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
  ```
  -Then clone the EOS repository recursively and run build.sh in the root `eos` folder.
  +Then clone the EOS.IO repository recursively and run build.sh in the root `eos` folder.
  ```bash
  git clone https://github.com/eosio/eos --recursive
  