Add Cloud Design Patterns (#3304)

* Add Cloud Design Patterns

* fixed blanks

free-programming-books.md

@@ -333,6 +333,7 @@
 
 #### Cloud Computing
 
+* [Cloud Design Patterns](https://www.microsoft.com/en-us/download/details.aspx?id=42026)
 * [Designing Distributed Systems](https://azure.microsoft.com/en-us/resources/designing-distributed-systems/) *(account required)*
 * [Learn Azure in a Month of Lunches](https://azure.microsoft.com/mediahandler/files/resourcefiles/learn-azure-in-a-month-of-lunches/Learn_Azure_in_a_Month_of_Lunches.pdf) - Iain Foulds (PDF)
 * [Monitoring Modern Infrastructure](https://www.datadoghq.com/ebook/monitoring-modern-infrastructure/) *(account required)*