solve OSX issue (changing suffix .app)

Applications/ctkExampleHostedApp/target_libraries.cmake

@@ -6,5 +6,5 @@
 
 SET(target_libraries
   CTKCore
-  org_commontk_dah_app
+  org_commontk_dah_hostedapp
   )

Plugins/org.commontk.dah.hostedapp/ctkDicomAppPlugin.cpp

@@ -93,4 +93,4 @@ ctkPluginContext* ctkDicomAppPlugin::getPluginContext()
   return ctkDicomAppPlugin::Context;
 }
 
-Q_EXPORT_PLUGIN2(org_commontk_dah_app, ctkDicomAppPlugin)
+Q_EXPORT_PLUGIN2(org_commontk_dah_hostedapp, ctkDicomAppPlugin)