Updated the EXPORT_CLASS macro.

src/blob_detector_alg_nodelet.cpp

@@ -26,5 +26,5 @@ BlobDetectorNodelet::~BlobDetectorNodelet()
 }
 
 // parameters are: package, class name, class type, base class type
-PLUGINLIB_DECLARE_CLASS(iri_blob_detector, BlobDetectorNodelet, BlobDetectorNodelet, nodelet::Nodelet);
+PLUGINLIB_EXPORT_CLASS(BlobDetectorNodelet, nodelet::Nodelet);