anchor.diff:  The documentation (<<src/docs/asciidoc>>) is editable :
   
   * online via github (Edit button + PR)
  -* offline, after local `git clone` + .... 
  +* offline, after local `git clone` + ....
   
   The syntax is asciidoc :
   
  
positive.code: 
  - [x] configure travis build
  - [x] configure github + gradle + travis to publish on gh-pages branches
  - [ ] find and fixe conversion bug
  - [x] complete conversion: note, warning, ...
  - [ ] fix warning during html's generation
  - [x] add meta info during conversion (doctitle, revision, tags, ...)
  - [ ] add a home page (index.html)
  - [ ] add a navigation bar or a menu (?)
  - [ ] customize html layout (header, footer, css)
  - [ ] transfer ownership to jMonkeyEngine org
  - [ ] complete Doc, how to contribute,...
  - [ ] accept PR
  - [ ] write a post about the migration (the tools, why asciidoc, vs alternatives, how ...)
  
negative.code: - [ ] add search box
  - [ ] add google analytics (?)
  - [ ] support emoji
  - [ ] support iframe block
  - [ ] fix slideshow of "Xxx for Dummies"
  - [ ] optimize remove useless images
  - [ ] optimize image, use smaller file, eg convert to jpg or to webp, resize
  - [ ] organize i18n / lang
  