Moving util function to find nearest successor timestamp to its
own class for better readability and portability
change author to knd
reduce sleep from 200ms to 1 in order to make tests run faster
Reduce sleep time from milliseconds to microseconds
Adding new sanity check and removing all the sleeps

We do not need to sleep in the tests because each timestamp is guaranteed to be unique
Merge pull request #6 from cinchapi/pr/5

Additional changes from Pr/5