README update

README.md

@@ -34,6 +34,7 @@ Usage: php scan.php -d <directory>
     -L                   --line-number        Display matching pattern line number in file
     -o                   --output-format      Custom defined output format
     -j                   --wordpress-version  Version of wordpress to get md5 signatures
+                         --combined-whitelist Combined whitelist
 ```
 
 Ignore argument could be used multiple times and accept glob style matching ex.: "`cache*`", "`??-cache.php`" or "`/cache`" etc.
@@ -81,6 +82,12 @@ scan -d . -j 4.9.2
 ```
 That will automatically get md5sums from wordpress api (https://api.wordpress.org/core/checksums/1.0/?version=x.x.x) and add it to whitelist. To check your version simply check wp-includes/version.php file of your wordpress
 
+Combined whitelist
+---
+
+This list is a pre generated database for opensource projects more information at https://scr34m.github.io/php-malware-scanner/ site.
+The scanner check for database hash validity and only download if it is different and of course when argument used.
+
 Tools
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