Add doc for setting the queue adapter.
Merge pull request #28 from larrylv/patch-1

Add doc for setting the queue adapter.
Fix `Person#==` method in test.
Merge pull request #29 from larrylv/patch-2

Fix `Person#==` method in test.
Make tests for `Person` pass.
Merge pull request #30 from larrylv/patch-3

Make tests for `Person` pass.