Create DNS plugin using Amazon Web Services Route 53

update readme and add aws-sdk version >= 1.8.0
update readme
update readme more
update readme more again
update code block in readme
try tabs for code blocks
try html tags
nope revert and try tomorrow
fix reference indent
added a space
Merge remote-tracking branch 'origin/features/dns/aws-route53' into features/dns/aws-route53

Conflicts:
	plugins/dns/route53/README.md
	plugins/dns/route53/lib/openshift/route53_plugin.rb
	plugins/dns/route53/openshift-origin-dns-route53.gemspec
	plugins/dns/route53/rubygem-openshift-origin-dns-route53.spec