Move the plugin examples to subdir of pluginhowto.

doc/pluginhowto/examples/loggermode/loggermodePlugin.cpp

@@ -0,0 +1,36 @@
+#include "loggermodePlugin.h"
+
+#include "loggermode.h"
+
+#include <QtPlugin>
+#include <QStringList>
+
+LoggerModePlugin::LoggerModePlugin()
+{
+}
+
+LoggerModePlugin::~LoggerModePlugin()
+{
+}
+
+void LoggerModePlugin::extensionsInitialized()
+{
+}
+
+bool LoggerModePlugin::initialize(const QStringList& args, QString *errMsg)
+{
+    Q_UNUSED(args);
+    Q_UNUSED(errMsg);
+
+    loggerMode = new LoggerMode;
+    addAutoReleasedObject(loggerMode);
+
+    return true;
+}
+
+void LoggerModePlugin::shutdown()
+{
+    // Do nothing
+}
+
+Q_EXPORT_PLUGIN(LoggerModePlugin)