README.md in s3_website-2.4.0 vs README.md in s3_website-2.5.0

@@ -108,10 +108,13 @@
   "*": 300
 ```
 
 Place the configuration into the file `s3_website.yml`.
 
+After changing the `max_age` setting, push with the `--force` option.
+Force-pushing allows you to update the S3 object metadata of existing files.
+
 ### Gzip Compression
 
 If you choose, you can use compress certain file types before uploading them to
 S3. This is a recommended practice for maximizing page speed and minimizing
 bandwidth usage.
@@ -134,10 +137,12 @@
 ```
 
 Remember that the extensions here are referring to the *compiled* extensions,
 not the pre-processed extensions.
 
+After changing the `gzip` setting, push with the `--force` option.
+
 ### Using non-standard AWS regions
 
 By default, `s3_website` uses the US Standard Region. You can upload your
 website to other regions by adding the setting `s3_endpoint` into the
 `s3_website.yml` file.
@@ -193,9 +198,12 @@
 You can reduce the cost of hosting your blog on S3 by using Reduced Redundancy Storage:
 
   * In `s3_website.yml`, set `s3_reduced_redundancy: true`
   * All objects uploaded after this change will use the Reduced Redundancy Storage.
   * If you want to change all of the files in the bucket, you can change them through the AWS console, or update the timestamp on the files before running `s3_website` again
+
+After changing the `s3_reduced_redundancy` setting, push with the `--force`
+option.
 
 ### How to use Cloudfront to deliver your blog
 
 It is easy to deliver your S3-based web site via Cloudfront, the CDN of Amazon.