Add a main method as a demo.

Author: tinevez

src/main/java/fiji/plugin/trackmate/action/LabelImgExporter.java

@@ -9,6 +9,7 @@
 
 import org.scijava.plugin.Plugin;
 
+import fiji.plugin.trackmate.LoadTrackMatePlugIn_;
 import fiji.plugin.trackmate.Logger;
 import fiji.plugin.trackmate.Model;
 import fiji.plugin.trackmate.Spot;
@@ -17,6 +18,7 @@
 import fiji.plugin.trackmate.gui.TrackMateWizard;
 import fiji.plugin.trackmate.util.SpotNeighborhood;
 import fiji.plugin.trackmate.util.TMUtils;
+import ij.ImageJ;
 import ij.ImagePlus;
 import net.imagej.ImgPlus;
 import net.imagej.axis.Axes;
@@ -531,4 +533,17 @@ public void write( final Spot spot, final int id )
 			ra.get().set( id );
 		}
 	}
+
+	public static void main( final String[] args )
+	{
+		ImageJ.main( args );
+		final LoadTrackMatePlugIn_ plugIn = new LoadTrackMatePlugIn_();
+		plugIn.run( "samples/FakeTracks.xml" );
+		createLabelImagePlus(
+				plugIn.getModel(),
+				plugIn.getSettings().imp,
+				true,
+				true,
+				plugIn.getModel().getLogger() ).show();
+	}
 }