This version is ready for debugging tunneling problem with more convenience.

- NEW : add the method for set the physical values related to the vertices
- NEW : add the method of initialization which is called foremost.
- NEW : add new method for setting and getting the physical property related to specified vertex.
- CHG : change the method for getting material-related physical property
- ENH : move the method for stuffing potential and initializing vertex-based physical value into the building of SimpleONO domain.