Updated project files
Improved usability of the tetromino rotation tests

The first I-shape rotation test was produced all the new functionality, which was confusing to some (if you haven't looked at future tests). Changed the new functionality to be produced by the second I-shape rotation test, so that the two tests would be better contrasted.
Removed dead link
Unified terminology
Rotate the I tetromino according to the Nintendo Rotation System

http://tetris.wikia.com/wiki/Nintendo_Rotation_System
Merge branch 'master' into tutorial

Conflicts:
	src/main/java/tetris/Tetromino.java
	src/test/java/tetris/RotatingTetrominoesTest.java