Update free-courses-pt_BR.md (#3205)

free-courses-pt_BR.md

@@ -10,6 +10,7 @@
 * [PHP](#php)
 * [Python](#python)
 * [Ruby](#ruby)
+* [Swift](#swift)
 
 
 ### Android
@@ -66,3 +67,8 @@
 
 * [Curso de Ruby on Rails para Iniciantes](https://www.youtube.com/playlist?list=PLe3LRfCs4go-mkvHRMSXEOG-HDbzesyaP) - Jackson Pires (YouTube)
 * [Ruby Para Iniciantes](https://www.udemy.com/ruby-para-iniciantes/) - Bruno Paulino (Udemy)
+
+
+### Swift
+
+* [Aprendendo Swift do Iniciante ao Avançado. (Mac e Windows)](https://www.udemy.com/aprendendoswift3/) - Lucas Alencar (Udemy)