Update README.md

Author: dannyp11

README.md

@@ -1,5 +1,7 @@
 # Introduction
-This is unofficial https://exchangerate.host (https://github.com/Formicka/exchangerate.host) python client library
+This is unofficial [exchangerate.host](https://github.com/Formicka/exchangerate.host) python client library.
+
+exchangerate.host is a simple and lightweight free service for current and historical foreign exchange rates & crypto exchange rates.
 
 # Getting started
 
@@ -21,9 +23,6 @@ client = exchangerate.ExchangerateClient()
 print(client.latest())
 ```
 
-## Configuration
-- 
-
 # Development guide
 ## Testing
 This package uses `tox` to run testing automation against multiple python versions, to install and run tox, use