message: Add clang-format to mac install instructions
  Add clang-format to brew install instructions
diff: @@ -47,7 +47,7 @@ dnf install cmake libtool libstdc++
  On OS X, you'll need to install several dependencies. This can be accomplished via [Homebrew](https://brew.sh/):
  ```
  -brew install coreutils wget cmake libtool go bazel automake ninja
  +brew install coreutils wget cmake libtool go bazel automake ninja clang-format
  ```
  _note_: `coreutils` is used for realpath
  