Add code snippet for ICS-generation.

README.md

@@ -0,0 +1,24 @@
+# Just an example of how to share events using links
+
+## How to run the project
+
+```bash
+npm ci
+npm start
+
+```
+
+## Custom solution example
+
+### Generate ICS-text from URL quiery parameters
+
+http://localhost:8080/generate-event?description=Annual+concert+at+the+Moscow+House+of+Music
+
+### Generate ICS-file from URL quiery parameters
+http://localhost:8080/generate-event?description=Annual+concert+at+the+Moscow+House+of+Music&output=file
+
+
+## Third-party examples
+* https://jekuer.github.io/add-to-calendar-button/ - A convenient JavaScript snippet, which lets you create beautiful buttons, where people can add events to their calendars.
+* https://jennamolby.com/ics-link-generator/ - Outlook Calendar (.ICS) Link Generator
+