Début de la création des classes Graph, Edge et Vertex.

Changes to be committed:
	new file:   Include/Edge.h
	new file:   Include/Graph.h
	modified:   Include/MatrixP.h
	new file:   Include/Vertex.h
	modified:   Include/run.h
	new file:   Src/Edge.cpp
	new file:   Src/Graph.cpp
	new file:   Src/Vertex.cpp