Progress on data source admin

pkg/stores/sqlstore/sqlstore_datasource.go

@@ -7,9 +7,14 @@ import (
 )
 
 func init() {
-	bus.AddQueryHandler("sql", GetDataSourcesQuery)
+	bus.AddHandler("sql", GetDataSourcesQuery)
+	bus.AddHandler("sql", AddDataSource)
 }
 
 func GetDataSourcesQuery(query *m.GetDataSourcesQuery) error {
 	return errors.New("Hello from query handler")
 }
+
+func AddDataSource(cmd *m.AddDataSourceCommand) error {
+	return errors.New("Hello from command handler")
+}