Domain can auto_renew itself
Merge branch 'master' of https://github.com/mzuneska/dnsimple-ruby into mzuneska-master

Conflicts:
	lib/dnsimple/domain.rb
Normalize specs
Use real fixtures
Merge branch 'mzuneska-master' (closes GH-36)
CHANGELOG for GH-36 and GH-38