Enhancement: Added unittest for the VFS file watcher
Change: Renamed "JsonParser" to "JsonResource" to reflect the
manipulation capabilities
Change: Redefined "stop()" method in "AbstractWatcher"
Fix: Fixed ignored "stop()" calls if no watch paths are set
Fix: Fixed erroneous positive result in "is_watched()" for files of
watched directories
Trivial: Updated README and moved "Fiduciary Licence Agreement" to
"_developer"