Coderwalll profile

README.md

@@ -2,7 +2,7 @@
 [![Build Status](https://travis-ci.org/rderoldan1/financial_maths.png?branch=master)](https://travis-ci.org/rderoldan1/financial_maths)
 [![Coverage Status](https://coveralls.io/repos/rderoldan1/financial_maths/badge.png?branch=master)](https://coveralls.io/r/rderoldan1/financial_maths)
 [![Gem Version](https://badge.fury.io/rb/financial_maths.png)](http://badge.fury.io/rb/financial_maths)
-
+[![endorse](https://api.coderwall.com/rderoldan1/endorsecount.png)](https://coderwall.com/rderoldan1)
 more functions will be added soon
 
 #### New in version 0.0.5