couchdb id using date
curl -X GET "http://localhost:5984/transactions/_design/widget_count/_view/toss?group_level=1"
{"rows":[
{"key":[20],"value":10},
{"key":[21],"value":20}
]}
curl -X GET "http://localhost:5984/transactions/_design/widget_count/_view/toss?group_level=2"
{"rows":[
{"key":[20,widget],"value":10},
{"key":[21,widget],"value":10},
{"key":[21,thing],"value":10}
]}