add comments and new parameter id for client request order

models/drivers.go

@@ -1,17 +1,22 @@
 package models
 
+// collection of drivers ordered in map
 type Drivers map[string]*Driver
 
+// driver model
 type Driver struct {
-	Type    string `json:"type,omitempty"`
-	Bus     string `json:"bus"`
-	Address uint   `json:"address"`
+	Type    string `json:"type,omitempty"` // driver type name of driver in collection
+	Bus     string `json:"bus"`            // name of driver bus
+	Address uint   `json:"address"`        // address of bus
 }
 
+// returns a new collection of drivers
 func NewDrivers() Drivers {
 	return make(Drivers)
 }
 
+// Add new driver to driver collection
+// typ is the name of the driver in driver collection
 func (d *Drivers) AddDriver(typ, bus string, address uint) {
 	(*d)[typ] = &Driver{
 		Bus:     bus,