Merge pull request #51 from box/GroupAddition

Group addition
make json parser more robust by handling unknown types for BoxTypedObject and BoxItem.
Merge pull request #52 from box/jacksonunknown

make json parser more robust by handling unknown types for BoxTypedObjec...
improve unit test
Merge pull request #53 from box/utest

improve unit test
fix of EVENTS type parsing from JSON response
Merge pull request #55 from pnedonosko/events-json-parser

Fix of EVENTS type parsing from JSON response
Fix a bug parsing error responses.
Bug was introduced by a change to make json parser more robust. The change was to make parsing of BoxTypedObject fall back to base type if "type" field doesn't exist or is unknown. However caused a json parsing exception swallowed and produced a class cast exception
Merge pull request #56 from box/parseerrorfix

Fix a bug parsing error responses.
Fix jenkins build error. Wasnt manifesting in eclipse
Merge pull request #57 from box/fixbuild

Fix jenkins build error. Wasnt manifesting in eclipse
Merge branch 'master' of github.com:box/box-java-sdk-v2 into keepalive