feat(handlers): Handle DELETE for environment sensors

It now works as advertised in the README! *ahem*...

main.go

@@ -68,12 +68,18 @@ func main() {
 	// Register handlers for environmental sensors
 	for sensorType, envSensorConfigs := range conf.Dynamic.Sensors {
 		for i, envSensorConfig := range envSensorConfigs {
-			urlPattern := "PUT " + util.GetSensorURLPath(
+			urlPattern := util.GetSensorURLPath(
 				sensorType, envSensorConfig.SensorData.Location, envSensorConfig.SensorData.Name,
 			)
 			http.HandleFunc(
-				urlPattern,
-				handlers.EnvironmentSensor(
+				"PUT "+urlPattern,
+				handlers.EnvironmentSensorPUT(
+					conf.Credentials, envSensorConfig.AllowedCredentials, &conf.Response.Sensors[sensorType][i],
+				),
+			)
+			http.HandleFunc(
+				"DELETE "+urlPattern,
+				handlers.EnvironmentSensorDELETE(
 					conf.Credentials, envSensorConfig.AllowedCredentials, &conf.Response.Sensors[sensorType][i],
 				),
 			)