Update README.rst

Author: codingjoe

README.rst

@@ -5,7 +5,9 @@ A lightweight file upload input for Django and Amazon S3.
 
 Django-S3File allows you to upload files directly AWS S3 effectively
 bypassing your application server. This allows you to avoid long running
-requests from large file uploads.
+requests from large file uploads. This is particuallary helpful for if
+you run your service on AWS Lambda or Heroku where you have a fix request
+limit.
 
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