message: remove dependency to xbuild
diff: @@ -115,8 +115,8 @@ More details can be found in the [uhyve README](https://github.com/hermitcore/uh
  It is also possible to run RustyHermit within [Qemu](https://www.qemu.org).
  RustyHermit produces 64-bit binaries, but Qemu's x86 emulation cannot boot them directly.
  Therefore, the loader [rusty-loader](https://github.com/hermitcore/rusty-loader) is required to boot the application.
  -To build the loader, the cargo subcommand [xbuild](https://github.com/rust-osdev/cargo-xbuild) and the assembler [nasm](https://www.nasm.us) are required.
  -After the installation of [xbuild](https://github.com/rust-osdev/cargo-xbuild), the loader can be build as follows.
  +To build the loader, the assembler [nasm](https://www.nasm.us) are required.
  +After the installation, the loader can be build as follows.
  ```bash
  $ git clone https://github.com/hermitcore/rusty-loader.git
  