chore: added loggly deprecation warning

Gareth Jones · Gareth Jones · commit 42249dc43f6b · 2018-02-26T08:19:05.000+11:00
diff --git a/docs/appenders.md b/docs/appenders.md
@@ -27,7 +27,6 @@ The following appenders are included with log4js. Some require extra dependencie
 * [hipchat](hipchat.md)
 * [logFaces-HTTP](logFaces-HTTP.md)
 * [logFaces-UDP](logFaces-UDP.md)
-* [loggly](loggly.md)
 * [logLevelFilter](logLevelFilter.md)
 * [logstashHTTP](logstashHTTP.md)
 * [logstashUDP](logstashUDP.md)
@@ -47,6 +46,7 @@ The following appenders are included with log4js. Some require extra dependencie
 The following appenders are supported by log4js, but will issue deprecation warnings from version 2.6 onwards - they will be removed from the log4js core in version 3. If you are using these appenders, you should alter your dependencies to include them explicitly.
 
 * [gelf](https://github.com/log4js-node/gelf)
+* [loggly](https://github.com/log4js-node/loggly)
 
 For example, if you were previously using the gelf appender (`type: 'gelf'`) then you should add `@log4js-node/gelf` to your dependencies and change the type to `type: '@log4js-node/gelf'`.
 
diff --git a/docs/index.md b/docs/index.md
@@ -13,7 +13,7 @@ There have been a few changes between log4js 1.x and 2.x (and 0.x too). You shou
 * [file appender](file.md), with configurable log rolling based on file size or [date](dateFile.md)
 * [SMTP appender](smtp.md)
 * [GELF appender](https://github.com/log4js-node/gelf)
-* [Loggly appender](loggly.md)
+* [Loggly appender](https://github.com/log4js-node/loggly)
 * [Logstash UDP appender](logstashUDP.md)
 * logFaces ([UDP](logFaces-UDP.md) and [HTTP](logFaces-HTTP.md)) appender
 * [multiprocess appender](multiprocess.md) (useful when you've got multiple servers but want to centralise logging)
diff --git a/docs/loggly.md b/docs/loggly.md
diff --git a/lib/appenders/loggly.js b/lib/appenders/loggly.js
@@ -2,6 +2,10 @@
 
 'use strict';
 
+/**
+ * This appender has been deprecated.
+ * Updates and bug fixes should be made against https://github.com/log4js-node/loggly
+ */
 const debug = require('debug')('log4js:loggly');
 const loggly = require('loggly');
 const os = require('os');
@@ -105,6 +109,9 @@ function logglyAppender(config, layout) {
     }
   };
 
+  // trigger a deprecation warning, with a pointer to the replacement lib
+  app.deprecated = '@log4js-node/loggly';
+
   return app;
 }
 
