- Core library header files added to core.h file.

- Fixed windows build.
- Added AccommodationService class.

core/iplugin.h

@@ -4,6 +4,7 @@
 #include <QString>
 #include <QWidget>
 #include <QtPlugin>
+#include <QJsonObject>
 
 #include "service.h"
 
@@ -18,13 +19,13 @@ public:
     virtual ~IPlugin() {  }
     virtual QString pluginName() = 0;
     virtual QString pluginId() = 0;
-    virtual void init() = 0;
+    virtual void init(const QJsonObject &metaData) = 0;
     virtual QWidget *ui() {
         return m_ui;
     }
     template<class T>
     Service<T> *service() {
-        (Service<T>*)m_service;
+        return (Service<T>*)m_service;
     }
 
 protected: