Add static sound. Add predefined announcements and helper scripts.

bin/schedule_meeting

@@ -0,0 +1,26 @@
+#!/bin/bash
+
+function time_minus_minutes() {
+	time="$1"
+	change="$2"
+
+	difference=$(($change * 60))
+	
+	result=$(( $(date -d "$time" "+%s") - $difference ))
+
+	echo `date -d "@$result" "+%H:%M"`
+}
+
+TYPE=$1
+shift
+TARGET=$1
+shift
+SLACK=5
+TIME=`time_minus_minutes "$TARGET" "$SLACK"`
+
+NAME="$@"
+
+MSG="Meeting in $SLACK minutes. ... Meeting '$NAME' in $SLACK minutes."
+#echo "Scheduling $TYPE for meeting '$NAME' at $TARGET in $SLACK minutes in advance, at $TIME."
+~/schedule_${TYPE} "$TIME" "$MSG"
+