Added the book Clean Code

The book "Clean Code: A Handbook of Agile Software Craftsmanship", by Robert C. Martin is a must read for every software developer.

Author: bmbferreira

README.md

@@ -91,6 +91,7 @@ But knowing the stuff will help you become better! :muscle:*
 
 ### Practices
 - :book: [Working Effectively with Legacy Code](https://www.goodreads.com/book/show/44919.Working_Effectively_with_Legacy_Code)
+- :book: [Clean Code: A Handbook of Agile Software Craftsmanship] (https://www.goodreads.com/book/show/3735293-clean-code)
 - :book: [Test Driven Development: By Example](https://www.goodreads.com/book/show/387190.Test_Driven_Development)
 - :white_check_mark: [Going To Production Checklist](https://github.com/mr-mig/going-to-production)
 - :book: [Release It!](https://www.goodreads.com/book/show/1069827.Release_It_)