Update changelog (#37)

CHANGELOG.md

@@ -9,6 +9,39 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
+- Support for on-device geofencing via new `HyperTrack.orders["my_order"].isInsideGeofence` property
+  - To learn more about how to best use this new feature see our guide here: https://developer.hypertrack.com/docs/clock-in-out-tagging#verify-shift-presence-before-starting-work
+
+Example use for worker clock in:
+
+```typescript
+function handlePresence(
+  isInsideResult: Result<boolean, LocationError>
+) {
+  switch (isInsideResult.type) {
+    case "success":
+      if (isInsideResult.value) {
+        // allow worker to clock in for the shift
+      } else {
+        // "to clock in you must be at order destination"
+      }
+      break;
+    case "failure":
+      // resolve any tracking errors to obtain geofence presence
+  }
+}
+
+// check if a worker is inside an order's geofence
+handlePresence(HyperTrack.orders.get("my_order").isInsideGeofence)
+
+// or, listen to order.isInsideGeofence changes
+HyperTrack.subscribeToOrders((orders) => { 
+  handlePresence(orders.get("my_order").isInsideGeofence)
+})
+```
+
+### Added
+
 - Support for on-device geofencing via new `HyperTrack.orders["my_order"].isInsideGeofence` property
   - To learn more about how to best use this new feature see our guide here: https://developer.hypertrack.com/docs/clock-in-out-tagging#verify-shift-presence-before-starting-work