cli: basic-integrity function comment added (ref. #66)

plugins/basic-integrity/cli.js

@@ -26,6 +26,12 @@ let binToBase64 = (binary_data) => {
 }
 
 
+/**
+ * get integrity digests for a given path
+ * 
+ * path  - path to a file whose digest is to be generated
+ * algos - array of SubtleCrypto.digest-compatible algorithm names
+ */
 let getFileIntegrity = async (path, algos) => {
     
     var result = []