Added a demo project with a simple synchronized double property. Added a step-by-step documentation for the example.
Last part of the howto was missing
Update sliderdemo.md

Typo
Changed package to match the rest of the framework. Added missing JavaDoc. Added SLF4J implementation.
Merge branch 'sliderdemo'
don't enforce license header on demo projects
move example application to the new demos/ folder
document reason why tests fail sometimes
move transmitter into transmitter/ folder