Created fitg-usecases-movement.tex

This file contains usecases for the Movement rules, with a usecases for 9.3-9.7. This should work, and the only error I received on latexlabs.org was the missing usecases package. Still should be compiled by someone who is better with LaTeX than I.
Merge pull request #18 from Greg-Donaldson/patch-1

Created fitg-usecases-movement.tex