Final version - update 1

Slight modifications of:

1. MineGraphics: corrected timer intervals form 0.01 sec to 0.1 sec (as
agreed we make run every 10th of second - i.e. 100ms)

2. MineEngine: updated checkLosingCondition() for the 2nd condition of
the if statement from "isValidRow(row)" to "isValidRow(row - 1)"

3. DefaultMiner: add comments for accrediting the code to Dr. Stansifer

4. MineInterface: modifications to please checkstyle!