add header comment and disclaimer

.vscode/numbered-bookmarks.json

@@ -1,19 +1,3 @@
 {
-	"bookmarks": [
-		{
-			"fsPath": "$ROOTPATH$/borghelper.sh",
-			"bookmarks": [
-				-1,
-				268,
-				10,
-				-1,
-				-1,
-				-1,
-				-1,
-				-1,
-				-1,
-				384
-			]
-		}
-	]
+	"bookmarks": []
 }

borghelper.sh

@@ -2,6 +2,13 @@
 
 #
 ## borg helper script for viewing and restoring backups
+##
+## script written by Asif Bacchus, last updated March 26, 2020.
+##
+## The author of this script is not affiliated with 'borgbackup' in any way and
+## does not warrant anything about this script, its operation, suitability or
+## fitness for use in any environment or under any conditions. You are using 
+## this script entirely at your own risk.
 #
 
 ### trap