Adding short SlicingDice description to README

Author: gmenegatti

README.md

@@ -1,6 +1,8 @@
 # SlicingDice Official Arduino Client (v1.0)
 
-Official Arduino client for [SlicingDice](http://www.slicingdice.com/), Data Warehouse and Analytics Database as a Service.
+Official Arduino client for [SlicingDice](http://www.slicingdice.com/), Data Warehouse and Analytics Database as a Service.  
+
+[SlicingDice](http://www.slicingdice.com/) is a serverless, API-based, easy-to-use and really cost-effective alternative to Amazon Redshift and Google BigQuery.
 
 ## Documentation