Log Message:
Update ruby-ffi-yajl to 2.2.0.

2.2.0 (04/30/2015)

New features

* Bad UTF8 exceptions now display the invalid token
* validate_utf8: false will sanitize output and produce valid UTF8-clean JSON

Changes

* Ruby 1.8.7 support dropped.

2.1.0 (04/20/2015)

New features

* StringIOs are now encoded to strings
* Added :unique_key_checking flag to parser that will raise on repeated hash
  keys (commonly edit mistakes in long JSON documents).

Changes

* Includes its own dlopen extension
* C extension should operation without ffi

2.0.0 (03/17/2015)

Changes

* Dropped the ffi-yajl/json_gem monkeypatch compatibility layer
  completely. The deprecation warning has been in there for months now
  and all the work to remove it from chef and ohai has been done in
  all the latest releases.