message: docs: add fedora build deps to copy+paste
diff: @@ -33,6 +33,11 @@ On Ubuntu, run the following commands:
  apt-get install realpath
  ```
  +On Fedora (maybe also other red hat distros), run the following:
  +```
  +dnf install cmake libtool libstdc++
  +```
  +
  On OS X, you'll need to install several dependencies. This can be accomplished via Homebrew:
  ```
  brew install coreutils # for realpath
  