--- /dev/null
+
+steps to bringing up this maps demo site...
+
+* need to configure a database in app.php. see default version: config/app.default.php
+
+* need an api key from google to have separate hit quotas on mapping API.
+ * refer to: https://developers.google.com/maps/documentation/distance-matrix/get-api-key
+ * see default version: config/config_google.default.php
+ * example of using api key:
+ * https://maps.googleapis.com/maps/api/distancematrix/json?origins=Seattle&destinations=San+Francisco&key=YOUR_API_KEY
+
+* need to install the cake geo code.
+ * more details at: https://github.com/dereuromark/cakephp-geo/blob/master/docs/Install.md
+
+* need to have jquery available and loaded someplace. i got a recent minified version of it and stored it in webroot/js and then added this to default.ctp before the fetch('script') call:
+ <script src="/js/jquery-3.2.1.min.js"></script>
+
+* need to load the marker clusterer code for map marker clustering to work. see ClusterMapHelper.php for more info.
+
+* a bunch of icons for map markers can be found here: https://code.google.com/archive/p/google-maps-icons/downloads
+
+* need to make links for the plugins:
+ from: https://book.cakephp.org/3.0/en/deployment.html#symlink-assets
+ run: bin/cake plugin assets symlink
+
+---
+
+assorted reference notes:
+
+mysql and php using javascript api with maps:
+https://developers.google.com/maps/documentation/javascript/mysql-to-maps
+
+how to show things in a form with checkboxes:
+https://book.cakephp.org/3.0/en/views/helpers/form.html#creating-inputs-for-associated-data
+
+tagList above is computed this way:
+https://book.cakephp.org/3.0/en/orm/retrieving-data-and-resultsets.html#finding-key-value-pairs
+
+events that can be hooked are listed here:
+https://developers.google.com/maps/documentation/javascript/reference
+
+