Merge branch 'master' of https://github.com/jdereg/n-cube
Updates threading to use AtomicBooleans, Change SimpleJsonParser to create our objects for us, and the updated UrlCommandCells to implement those new calls.  UrlcommandCell also now takes a url for its constructor
Merge branch 'master' of https://github.com/jdereg/n-cube
Updated fetch to only synchronize on the cache state.
Updated concurrency Test
Updated DefaultExecutor code to match new concurrency
Merge pull request #21 from kpartlow/master

Updated concurrency items and creation of CommandUrls