Add "why use faraday?" section to repository README.md

README.md

@@ -8,6 +8,22 @@ Faraday is an HTTP client library abstraction layer that provides a common inter
 adapters (such as Net::HTTP) and embraces the concept of Rack middleware when processing the request/response cycle.
 Take a look at [Awesome Faraday][awesome] for a list of available adapters and middleware.
 
+## Why use Faraday?
+
+Faraday gives you the power of Rack middleware for manipulating HTTP requests and responses,
+making it easier to build sophisticated API clients or web service libraries that abstract away
+the details of how HTTP requests are made.
+
+Faraday comes with a lot of features out of the box, such as:
+* Support for multiple adapters (Net::HTTP, Typhoeus, Patron, Excon, HTTPClient, and more)
+* Persistent connections (keep-alive)
+* Parallel requests
+* Automatic response parsing (JSON, XML, YAML)
+* Customization of the request/response cycle with middleware
+* Support for streaming responses
+* Support for uploading files
+* And much more!
+
 ## Getting Started
 
 The best starting point is the [Faraday Website][website], with its introduction and explanation.