add comments and new parameter id for client request order

models/query.go

@@ -1,6 +1,7 @@
 package models
 
+// Query model
 type Query struct {
-	Depth  uint   `json:"depth,omitempty"`
-	RegExp string `json:"regExp,omitempty"`
+	Depth  uint   `json:"depth,omitempty"`  // depth of query
+	RegExp string `json:"regExp,omitempty"` // additional regex paramaters
 }