### Description
This example shows how to find the minimum spanning tree. The input graph is:

<img style="float:middle" src="http://www.vtk.org/Wiki/images/0/0b/3_vertex_fully_connected_graph.svg">


and the minimum spanning tree computed is :

<img style="float:middle" src="http://www.vtk.org/Wiki/images/d/d2/Minimum_spanning_tree.svg">


You must have compiled VTK with VTK_USE_BOOST=ON to use this functionality. You must also link to vtkInfovis.
