message: add freeBSD on the top
diff: @@ -5,7 +5,7 @@ Alacritty
  Alacritty is the fastest terminal emulator in existence. Using the GPU for
  rendering enables optimizations that simply aren't possible in other emulators.
  -Alacritty currently supports macOS and Linux, and Windows support is planned
  +Alacritty currently supports freeBSD, macOS and Linux. Windows support is planned
  before the 1.0 release.
  <p align="center">
  