message: add a motivation in using Rust
diff: @@ -14,6 +14,12 @@ approach (like
  unikernel features for a better programmability and scalability for hierarchical
  systems.
  +_We decided to develop the kernel in the future in [Rust](https://www.rust-lang.org).
  +We promise that this will make it easier to maintain and to extend our kernel.
  +All code beside the kernel will be still developed in their preffered languag (C/C++/Go/Fortran)._
  +
  +_This branch represents the transmission from C to Rust._
  +
  ![HermitCore Demo](img/demo.gif)
  On the startup of HermitCore applications, cores are isolated from the Linux
  @@ -49,7 +55,7 @@ the HermitCore kernel and applications you need:
  ### HermitCore cross-toolchain
  We provide prebuilt packages (currently Debian-based only) of the HermitCore
  -toolchain, which can be installed as follows:
  +toolchain. The packages based on the master branch and can be installed as follows:
  ```bash
  $ echo "deb [trusted=yes] https://dl.bintray.com/rwth-os/hermitcore vivid main" | sudo tee -a /etc/apt/sources.list
  