Fixed the DDBv2 `has_item` support.

Thanks to dorfsmay for the report!
Merge branch 'ddb2-fix-has-item' into develop
Fixes #2090.
Fix Param class convert method
Added ``boto.rds2``.
Added missed newline.
And fixed the copyright.
Removed ``example.com`` from Route53 tests.

This used to work but now produces ``InvalidDomainError`` responses.
Merge branch 'r53-remove-example-com' into develop
Fixes #2098.
Route53: expose EvaluateTargetHealth (mandatory for alias resource record sets)
Route53: add integration tests for alias rrs
Updated tests to remove the ``example.com``.
Merge branch 'route53-aliasing' into develop
Fixes #2096.
Merge pull request #2094 from xbezdick/develop

Fix Param class convert method
Fixed previously unpicked up unit tests.

nose won't pull in test methods from executable files. Careful with those `chmod`s, kids!
Merge branch 'rds2' into develop
Fixes #2097.