Add notes for next development step

pis/update.go

@@ -2,6 +2,10 @@ package pis
 
 // Downloads the release tarball, extracts then applies to database
 func runUpdate(tarballUrl string) error {
-
+	// Download and extract tarball
+	// load PIS yaml files
+	// Run code deduplication
+	// Replace database collection with new data
+	// Ensure indeces are present
 	return nil
 }