GUI/FS-watcher update

There are no guarantees that we detect all changes and some changes may
trigger several events.  Should be good-enough for now
diff --git a/gui/chronosharegui.h b/gui/chronosharegui.h
index f0cbe76..b0d459e 100644
--- a/gui/chronosharegui.h
+++ b/gui/chronosharegui.h
@@ -33,6 +33,8 @@
 #include <QMessageBox>
 #include <QApplication>
 
+#include "fs-watcher.h"
+
 class ChronoShareGui : public QWidget
 {
   Q_OBJECT
@@ -93,6 +95,7 @@
 
   QString m_dirPath; // shared directory
 
+  FsWatcher *m_watcher;
   // QString m_settingsFilePath; // settings file path
   // QString m_settings;
 };