docs: update features section in readme

Author: dphang

README.md

@@ -82,11 +82,11 @@ Is there a feature that you want but is not yet supported? Please open a [new is
 - [x] [Base path](https://nextjs.org/docs/api-reference/next.config.js/basepath)
 - [x] [Preview mode](https://nextjs.org/docs/advanced-features/preview-mode)
 - [x] [Optional catch all routes](https://nextjs.org/docs/routing/dynamic-routes#optional-catch-all-routes)
-- [x] [Redirects](https://nextjs.org/docs/api-reference/next.config.js/redirects). Caveat: every route should be able to redirect except `_next/static/*` and `static/*`, since those cache behaviors do not have Lambda handlers attached to them.
-- [x] [Rewrites](https://nextjs.org/docs/api-reference/next.config.js/rewrites). Caveat: every route should be able to rewrite except `_next/static/*` and `static/*`, since those cache behaviors do not have Lambda handlers attached to them.
-- [x] [Custom Headers](https://nextjs.org/docs/api-reference/next.config.js/headers). Caveats: every route should be able to have custom headers except `_next/static/*` and `static/*`, since those cache behaviors do not have Lambda handlers attached to them. You also need to specify the S3 key as the source when redirecting any path mapped to an S3 file (see [PR](https://github.com/serverless-nextjs/serverless-next.js/pull/662) for more details).
-- [x] [Image Optimization](https://nextjs.org/docs/basic-features/image-optimization) Available in the latest 1.19 alpha version. Please try it out and let us know if there are any bugs.
-- [x] [Next.js 10 Localization](https://nextjs.org/blog/next-10). See: https://github.com/serverless-nextjs/serverless-next.js/issues/721 for more details and tips.
+- [x] [Redirects](https://nextjs.org/docs/api-reference/next.config.js/redirects). Caveat: every route should be able to redirect except `_next/static/*` and `static/*`, since those cache behaviors do not have Lambda handlers attached to them. Note that object format is not yet supported.
+- [x] [Rewrites](https://nextjs.org/docs/api-reference/next.config.js/rewrites). Caveat: every route should be able to rewrite except `_next/static/*` and `static/*`, since those cache behaviors do not have Lambda handlers attached to them. Note that object format is not yet supported.
+- [x] [Custom Headers](https://nextjs.org/docs/api-reference/next.config.js/headers). Caveats: every route should be able to have custom headers except `_next/static/*` and `static/*`, since those cache behaviors do not have Lambda handlers attached to them. Note that object format is not yet supported.
+- [x] [Image Optimization](https://nextjs.org/docs/basic-features/image-optimization)
+- [x] [Next.js 10 Localization](https://nextjs.org/blog/next-10). See: https://github.com/serverless-nextjs/serverless-next.js/issues/721 for more details and tips. We also automatically detect and copy the default configuration files if you are using the `next-i18next` package.
 - [x] [Incremental Static Regeneration](https://nextjs.org/docs/basic-features/data-fetching#incremental-static-regeneration). Requires SQS.SendMessage permissions on your Lambda role and various SQS/Lambda permissions (to be documented) on your deployment user. See https://github.com/serverless-nextjs/serverless-next.js/pull/1028 for more details, big thanks to @kirkness for this amazing work.
 
 ### Getting started