3.0-Upgrade.md in sidekiq-3.1.3 vs 3.0-Upgrade.md in sidekiq-3.1.4

@@ -27,11 +27,14 @@
 * `sidekiq/api` is no longer automatically required.  If your code uses
   the API, you will need to require it.
 * Redis-to-Go is no longer transparently activated on Heroku so as to not play
   favorites with any particular Redis service. You need to set a config option
   for your app:
-  `heroku config:set REDIS_PROVIDER=REDISTOGO_URL`
+  `heroku config:set REDIS_PROVIDER=REDISTOGO_URL`.  You may also use 
+  the generic `REDIS_URL`.  See
+  [Advanced Options: Setting the Location of your Redis server][1]
+  for details.
 * Anyone using Airbrake, Honeybadger, Exceptional or ExceptionNotifier
   will need to update their error gem version to the latest to pull in
   Sidekiq support.  Sidekiq will not provide explicit support for these
   services so as to not play favorites with any particular error service.
 * MRI 1.9 is no longer officially supported.  Sidekiq's official
@@ -61,5 +64,7 @@
   end
 end
 ```
 
 Your error handler must respond to `call(exception, context_hash)`.
+
+[1]: https://github.com/mperham/sidekiq/wiki/Advanced-Options#via-env-variable