add chrome user agent example in config

archivebox/config.py

@@ -32,7 +32,7 @@ SUBMIT_ARCHIVE_DOT_ORG = os.getenv('SUBMIT_ARCHIVE_DOT_ORG', 'True'
 CHECK_SSL_VALIDITY =     os.getenv('CHECK_SSL_VALIDITY',     'True'             ).lower() == 'true'
 RESOLUTION =             os.getenv('RESOLUTION',             '1440,2000'        )
 GIT_DOMAINS =            os.getenv('GIT_DOMAINS',            'github.com,bitbucket.org,gitlab.com').split(',')
-WGET_USER_AGENT =        os.getenv('WGET_USER_AGENT',        'ArchiveBox/{GIT_SHA} (+https://github.com/pirate/ArchiveBox/) wget/{WGET_VERSION}')
+WGET_USER_AGENT =        os.getenv('WGET_USER_AGENT',        'ArchiveBox/{GIT_SHA} (+https://github.com/pirate/ArchiveBox/) wget/{WGET_VERSION}')  # OR: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.77 Safari/537.36
 CHROME_USER_DATA_DIR =   os.getenv('CHROME_USER_DATA_DIR',    None)
 
 CHROME_BINARY =          os.getenv('CHROME_BINARY',          None)  # change to google-chrome browser if using google-chrome