whitelist dev branch
add ids criteria mapper

Added a mapper for query criteria so that a comma-separated list of
id's can used to limit query results to records with matching id's.

For example, http://esports.ign.com/content/v2/events=123,456,789 will
return events with id's matching 123, 456, or 789.
Merge pull request #20 from yobennett/query-multiple-ids

Query multiple ids