Modified Parsoid client to accept JSON tests rather than test / prefix. 

gwicke/testreduce#23

Did not modify the getTitle part of the code to use the oldID in the test JSON input.

I had to fake the git commits in order to get a list of "valid" git commits. Calling exec on ' git log --max-count=1 --pretty=format:"%H %ci" ' won't produce any valid parsoid commits since the git commits in test reduce are completely different from the actual parsoid commits.