Revisited the handling of symbolic links removal (unwatching) fixes #7
replaced exec() with system() fixes #11
Fixed recursive flag
First code refactor
Refactor of unwatch_symbolic_link
Refactor of unwatch_symbolic_link
Refactor of unwatch_symbolic_link
Modified README.md
Don't fork() the process to execute the command. fixes #12
log_message now support printf-like syntax