Brings back a single integer which represents a machine_type_group_id.

At the moment, this call requires the single mandatory parameter 'most_recent', i.e.

http://www.everygamegoing.com/api/v1/getMachineTypeGroupID/most_recent/

It returns the most recently added machine_type_group_id.

{
	"response":412
}

This command is available via the API as some forms on the Everygamegoing web site use it to populate drop-downs with the most recently added machine_type_group_id.