Fix dev composer and update cron script

readme.md

@@ -34,6 +34,16 @@
 8. Go to #admin and create a new project, feed & maps
 9. Add a GPX file named <project_codename>.gpx to /geo/
 
+## Local Development
+
+When developing Spot and the sibling `objects` library together, install dependencies through the local Composer manifest:
+
+```bash
+COMPOSER=composer.dev.json composer update
+```
+
+This makes Composer link `vendor/franzz/objects` to `../objects` and autoload that namespace directly from the local source path. Production continues to use `composer.json`, which installs `franzz/objects` from its Git repository. Commit and publish `objects` changes before updating/deploying a Spot version that relies on them.
+
 ## To Do List
 
 * Add mail frequency slider