Update readme.md

Mte90 · web-flow · commit b14206377fe2 · 2019-10-01T22:50:43.000+02:00
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 An open source book about how to contribute to open source.  
 I already said open source?
 
+[Release article](https://daniele.tech/2019/10/contribute-to-opensource-the-right-way-book/)
+
 ## Description 
 Have you ever wondered how the open source world exists thanks to the contribution of thousands of people all over the world? Is there a way to learn the skills to contribute at maximum, or to improve it? 
 
