Modified the NodeTree with a unique id used in construction of the DOT representation, so that two different nodes with the same name don't end up as the same on the graph.

src/util.cpp

@@ -4,4 +4,19 @@ std::string intToString(int theInt) {
 	std::stringstream converter;
 	converter << theInt;
 	return converter.str();
+}
+std::string truncateEnd(std::string to_truncate)
+{
+    std::string to_return = "";
+    for (unsigned int i = 0; i < to_truncate.length()-1; i++)
+        to_return = to_return + to_truncate[i];
+    return to_return;
+}
+
+std::string removeBeginning(std::string to_remove)
+{
+    std::string to_return = "";
+    for (unsigned int i = 1; i < to_remove.length(); i++)
+        to_return = to_return + to_remove[i];
+    return to_return;
 }