Fixed issue where next method IDs are not properly genereated...

...when there is a @rax:id for the method but there is no @id to be
found.
Merge pull request #222 from RackerWilliams/no_method_id

Fixed issue where next method IDs are not properly genereated...
Another fix where next method IDs are not properly genereated...

really just missed a case in the previous fix, where a method is
defined in a resource type.
Merge pull request #223 from RackerWilliams/no_method_id2

Another fix where next method IDs are not properly genereated...
Initial metadata in checker.
Add username to meta
Better meta proprety names.
Added version information to meta.
Initial Meta tests.
Added meta for XPath version and preserve request body.
Added default values for user and creator params.