Merge pull request #18 from calebgroom/master

Add UK auth section to README. Fixes issue #16.
bug fix for latest API release. Content type must be application/xml or you get a 500 on domain create
Merge pull request #22 from punchycode/master

bug fix for latest API release.
add offset/limit to domain/records queries, add filtering support

add total_domains and total_records properties, get rid of dangerous
default argument in DomainResults.__init__
Merge pull request #23 from Basis/master

enable access to all records/domains in an account, not just those in range 0 to 100
Merge pull request #26 from calebgroom/master

Control panel URL update
Make sure step is greater than 0
Merge pull request #28 from spoatacus/fix-27

Fixes Issue #27
Add rs-randallburt's limit and domain count