Adds file-is-there check

Attractor.hpp

@@ -2,6 +2,7 @@
 #define ATTRACTOR_HPP
 
 #include "Logger.hpp"
+#include <iostream>
 #include <fstream>
 #include <string>
 
@@ -17,7 +18,10 @@ public:
 		LogInfo("Reading file '%s'...\n", filename.c_str());
 
 		stfu::node system;
-		system.read(filename.c_str());
+		if(!system.read(filename.c_str())){
+			std::cerr << "Couldn't open file(" << filename << ") for reading\n";
+			exit(-1);
+		}
 
 		kernel = AttractorKernel::createAttractorKernel(system.getChild("AttractorKernel"));
 		projector = Projector::createProjector(system.getChild(system.getValue("Projector")), kernel->getDimension());