Create README.md

README.md

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+# Running updates
+There are two ways of updating imagineRio's contents: 
+
+## Scenario 1: Updating metadata only
+If there's only changes in image metadata, or new viewcones were added by other methods and you need to create manifests for these items, simply navigate to [this page](https://github.com/imaginerio/imaginerio-data/actions/workflows/fetch.yml) and click on "Run workflow".
+
+That's it! The workflow will automatically pull data from JSTOR and trigger the manifest creation/update.
+
+## Scenario 2: Adding new viewcones via KML files
+If you want to ingest new viewcones into the ArcGIS geodatabase, press "." while on this page. This will open Github web editor. 
+
+Navigate to the `input/kmls` folder in the left panel, then drag-and-drop your new KML files into it.
+
+On the far-left of the screen there are tabs with icons. Hovering over the icons will show the tabs name. Go to "Source Control", the one with dots connected by lines.
+
+In the text field at the top, enter a message such as "Add new KMLs", or "Add Thomas Ender KMLs" if you want to be more specific.
+
+The workflow will then proceed to fetch JSTOR's data, import the viewcones into ArcGIS and update the IIIF manifests.
+
+## Monitoring progress
+
+If you want to monitor the run progress in real time navigate to this [dashboard](https://github.com/imaginerio/imaginerio-etl/actions/workflows/iiif.yaml), select the latest run and click on the 'build-and-run' box to see the logs.