Update license
 Added more utilities in JsonUtils/Joltutils

      moved methods not from JsonUtil interface to JoltUtils
      added methods: navigateSafe, isEmptyJson, listKeyChains, toSimpleTraversrPath, added tests
      Marked older methods as depricated

Change-Id: I34e6b940f1d96580d5685edca3c8603aa388fad8
Merge pull request #97 from bazaarvoice/license

Update license
Merge pull request #99 from bivasdas/jsonUtil

Added more utilities in JsonUtils
Updated ArrayOrderObliviousDiffy to handle complex Map/List nesting
added test
added toString() override to Diffy.Result for easy logging
Fixes #95

Change-Id: I4aa0a640a6dc99a4c545aac2823e994a44d79942