anchor.diff:  * `cmake` (≥ 3)
   * c++ compiler with c++14 support (`gcc` ≥ 5, `clang` ≥ 3.5)
   
  -For recent Debian and Ubuntu derivatives (remove clang to only use gcc):
  +For recent Debian GNU/Linux and Ubuntu derivatives (remove clang to only use
  +gcc):
   
   [source,bash]
   ....
   apt-get install build-essential cmake clang
   ....
   
  -=== Installation
  -
  -First, we clone baryonyx git repository and the submodule.
  +=== Recommended
  +
  +* `nlopt` library - optimization library to automatic parametrization of
  +  Baryonyx solver.
  +
  +=== First installation
  +
  +First, we clone Baryonyx git repository and the submodule.
   
   ....
   git clone https://github.com/quesnel/baryonyx.git
  
positive.code: | https://travis-ci.org/quesnel/baryonyx[image:https://travis-ci.org/quesnel/baryonyx.png?branch=master[Build Status]] | https://ci.appveyor.com/project/quesnel/baryonyx?branch=master[image:https://ci.appveyor.com/api/projects/status/github/quesnel/baryonyx?branch=master&svg=true[Build Status]]
  |============
  
  Copyright © 2017 http://www.inra.fr/en[INRA]
  
  The software is released under the MIT license. See the LICENSE file.
  
  
  
  == Baryonyx
  
  
negative.code: export CXX=g++-7
  export CXXFLAGS='-Wall -Wextra -Werror -ftree-vectorize -mmmx -msse -msse2 -msse3 -O3'
  cmake -DCMAKE_INSTALL_PREFIX=$HOME/usr ..
  ....
  
  === Update installation
  
  First, we need to update the Git repository with the following commands:
  
  ....
  cd baryonyx
  git pull -r
  git submodule update --recursive
  ....
  
  Then go to the build directory and restart compilation and installation :
  
  ....
  cd baryonyx
  mkdir build
  cd build
  cmake -DCMAKE_BUILD_TYPE=Release ..
  make install
  ....
  
  === Usage
  