Partially update README

Bug: T224803
Change-Id: I02ef7215b9c0d231fbd91b84978fe43e3940cdfc

README

@@ -3,33 +3,39 @@ MediaWiki extension: SpamBlacklist
 
 SpamBlacklist is a simple edit filter extension. When someone tries to save the
 page, it checks the text against a potentially very large list of "bad"
-hostnames. If there is a match, it displays an error message to the user and 
+hostnames. If there is a match, it displays an error message to the user and
 refuses to save the page.
 
 To enable it, first download a copy of the SpamBlacklist directory and put it
-into your extensions directory. Then put the following at the end of your 
+into your extensions directory. Then put the following at the end of your
 LocalSettings.php:
 
-require_once( "$IP/extensions/SpamBlacklist/SpamBlacklist.php" );
+    wfLoadExtension ( 'SpamBlacklist' );
+
+To users running MediaWiki 1.24 or earlier:
+
+The instructions above describe the new way of installing this extension using wfLoadExtension().
+If you need to install this extension on these earlier versions (MediaWiki 1.24 and earlier),
+instead of `wfLoadExtension( 'SpamBlacklist' );`, you need to use:
+
+    require_once "$IP/extensions/SpamBlacklist/SpamBlacklist.php";
 
 The list of bad URLs can be drawn from multiple sources. These sources are
 configured with the $wgSpamBlacklistFiles global variable. This global variable
 can be set in LocalSettings.php, AFTER including SpamBlacklist.php.
 
-$wgSpamBlacklistFiles is an array, each value containing either a URL, a filename 
+$wgSpamBlacklistFiles is an array, each value containing either a URL, a filename
 or a database location. Specifying a database location allows you to draw the
 blacklist from a page on your wiki. The format of the database location
 specifier is "DB: <db name> <title>".
 
 Example:
 
-require_once( "$IP/extensions/SpamBlacklist/SpamBlacklist.php" );
-$wgSpamBlacklistFiles = array(
-	"$IP/extensions/SpamBlacklist/wikimedia_blacklist", // Wikimedia's list
-
-//          database    title
-	"DB: wikidb My_spam_blacklist",
-);
+    wfLoadExtension ( 'SpamBlacklist' );
+    $wgSpamBlacklistFiles = [
+    	"$IP/extensions/SpamBlacklist/wikimedia_blacklist", // Wikimedia's list
+    	"DB: wikidb My_spam_blacklist", // database (wikidb), title (My_spam_blacklist)
+    ];
 
 The local pages [[MediaWiki:Spam-blacklist]] and [[MediaWiki:Spam-whitelist]]
 will always be used, whatever additional files are listed.
@@ -63,16 +69,16 @@ Internally, a regex is formed which looks like this:
 
 A few notes about this format. It's not necessary to add www to the start of
 hostnames, the regex is designed to match any subdomain. Don't add patterns
-to your file which may run off the end of the URL, e.g. anything containing 
+to your file which may run off the end of the URL, e.g. anything containing
 ".*". Unlike in some similar systems, the line-end metacharacter "$" will not
 assert the end of the hostname, it'll assert the end of the page.
 
 Performance
 -----------
 
-This extension uses a small "loader" file, to avoid loading all the code on 
-every page view. This means that page view performance will not be affected 
-even if you are not running a PHP bytecode cache such as Turck MMCache. Note 
+This extension uses a small "loader" file, to avoid loading all the code on
+every page view. This means that page view performance will not be affected
+even if you are not running a PHP bytecode cache such as Turck MMCache. Note
 that a bytecode cache is strongly recommended for any MediaWiki installation.
 
 The regex match itself generally adds an insignificant overhead to page saves,
@@ -80,7 +86,7 @@ on the order of 100ms in our experience. However loading the spam file from disk
 or the database, and constructing the regex, may take a significant amount of
 time depending on your hardware. If you find that enabling this extension slows
 down saves excessively, try installing MemCached or another supported data
-caching solution. The SpamBlacklist extension will cache the constructed regex 
+caching solution. The SpamBlacklist extension will cache the constructed regex
 if such a system is present.
 
 Caching behavior
@@ -103,7 +109,7 @@ Stability
 ---------
 
 This extension has not been widely tested outside Wikimedia. Although it has
-been in production on Wikimedia websites since December 2004, it should be 
+been in production on Wikimedia websites since December 2004, it should be
 considered experimental. Its design is simple, with little input validation, so
 unexpected behavior due to incorrect regular expression input or non-standard
 configuration is entirely possible.
@@ -114,18 +120,18 @@ Obtaining or making blacklists
 The primary source for a MediaWiki-compatible blacklist file is the Wikimedia
 spam blacklist on meta:
 
-    http://meta.wikimedia.org/wiki/Spam_blacklist
+    https://meta.wikimedia.org/wiki/Spam_blacklist
 
-In the default configuration, the extension loads this list from our site 
+In the default configuration, the extension loads this list from our site
 once every 10-15 minutes.
 
-The Wikimedia spam blacklist can only be edited by trusted administrators. 
-Wikimedia hosts large, diverse wikis with many thousands of external links, 
-hence the Wikimedia blacklist is comparatively conservative in the links it 
+The Wikimedia spam blacklist can only be edited by trusted administrators.
+Wikimedia hosts large, diverse wikis with many thousands of external links,
+hence the Wikimedia blacklist is comparatively conservative in the links it
 blocks. You may want to add your own keyword blocks or even ccTLD blocks.
 You may suggest modifications to the Wikimedia blacklist at:
 
-    http://meta.wikimedia.org/wiki/Talk:Spam_blacklist
+    https://meta.wikimedia.org/wiki/Talk:Spam_blacklist
 
 To make maintenance of local lists easier, you may wish to add a DB: source to
 $wgSpamBlacklistFiles and hence create a blacklist on your wiki. If you do this,