Added backticks (`) to simpleDB select query in order to support domain
names that do not contain only letters, numbers, underscores (_), or
dollar symbols as documented at
http://docs.aws.amazon.com/AmazonSimpleDB/latest/DeveloperGuide/QuotingRulesSelect.html
Merge pull request #56 from nicktgr15/master

Added backticks(`) to domain name in simpleDB select query