Removed an unused method.
issue #8
Smplified MyVertexList and BlueReturn.

Added a constructor for BlueReturn and inlined the method that involved MyVertexList into computeMST.

issue #8
Inlined a local variable.
Renamd BlueRule to blueRule
issue #8
Removed jolden-mst-cascade because it has drifted from jolden-mst-julia.
issue #8