call matching algorithm in main method

example.cpp

@@ -2,6 +2,7 @@
 #include <fstream> // For reading input files.
 
 #include "graph.hpp"
+#include "edmonds.h"
 
 int main(int argc, char** argv)
 {
@@ -29,7 +30,10 @@ int main(int argc, char** argv)
          }
       }
    }
-   std::cout << greedy_matching_as_graph;
+
+   // Now, calculate the matching
+   ED::Graph optimum_matching = Edmonds::maximum_matching(greedy_matching_as_graph);
+   std::cout << optimum_matching;
    return EXIT_SUCCESS; 
 }