Setup rtabmap working directory on launch (so delete action works on startup even if the working directory is not the default one)

git-svn-id: http://rtabmap.googlecode.com/svn/trunk/rtabmap@293 f169173b-cf89-36c8-b27e-44dbe73f0c83

app/src/main.cpp

@@ -49,6 +49,7 @@ int main(int argc, char* argv[])
 	/* Start thread's task */
 	mainWindow->showNormal();
 
+	rtabmap->setWorkingDirectory(mainWindow->getWorkingDirectory().toStdString());
 	rtabmap->start();
 
 	// Now wait for application to finish