Add template for calender.ics

Author: johnny9

calendar.ics

@@ -0,0 +1,23 @@
+---
+layout: null
+permalink: /calendar.ics
+---
+BEGIN:VCALENDAR
+VERSION:2.0
+PRODID:-//TriangleBitDevs.org//Event Calendar//EN
+CALSCALE:GREGORIAN
+
+{% assign events = site.posts | where: "add_to_calendar", true %}
+{% for event in events %}
+BEGIN:VEVENT
+UID:{{ event.id }}
+DTSTAMP:{{ "now" | date: "%Y%m%dT%H%M%SZ" }}
+DTSTART:{{ event.start | date: "%Y%m%dT%H%M%SZ" }}
+DTEND:{{ event.end | date: "%Y%m%dT%H%M%SZ" }}
+SUMMARY:{{ event.title | escape }}
+DESCRIPTION:{{ event.description | strip_newlines | escape }}
+LOCATION:{{ event.location | escape }}
+END:VEVENT
+{% endfor %}
+
+END:VCALENDAR