Fix?

TodoApp.h

@@ -68,6 +68,7 @@ std::string rebuild_args_to_sentence(std::vector<std::string> args)
 		if (i < args.size()-1) // Append space between each token except for last
 			sentence += " ";
 	}
+    return sentence;
 }
 
 #define FILE_NAME ".todo.txt"

main.cpp

@@ -24,6 +24,11 @@
 
 int main(int argc, char ** argv)
 {
+    //char *testArgs[2];
+    //testArgs[0] = "Test";
+    //testArgs[1] = "Args";
+    //TodoApp app(2, testArgs);
+
 	TodoApp app(argc, argv);
 	app.Run();
 	return 0;