Added new video link

Screencasts.md

@@ -8,9 +8,7 @@ This screencast describes setting up a workspace (GOPATH), writing commands and
 
 [[video](http://www.youtube.com/watch?v=XCsL89YtqCs)]
 
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   * **Go for Web Development [Video]**
     * Author: Larry Price
     * Publication Date: December 29, 2015
@@ -18,9 +16,7 @@ This screencast describes setting up a workspace (GOPATH), writing commands and
 
 [[video](https://www.packtpub.com/web-development/go-web-development-video/)]
 
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   * **Go: Building Web Applications**
     * Authors: Nathan Kozyra, Mat Ryer
     * Publication Date: August 2016
@@ -28,7 +24,7 @@ This screencast describes setting up a workspace (GOPATH), writing commands and
 
 [[Course](https://www.packtpub.com/application-development/go-building-web-applications)]
 
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+***
   * **The Go Programming Language Guide - Code Like a Pro [Video]**
     * Author: Eduonix
     * Publication Date: September 23, 2016
@@ -36,7 +32,7 @@ This screencast describes setting up a workspace (GOPATH), writing commands and
 
 [[video](https://www.packtpub.com/application-development/go-programming-language-guide-code-pro-video)]
 
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+***
   * **Go Projects [Video]**
     * Authors: Ben Tranter & Rostislav Dzinko
     * Publication Date: November 14, 2016
@@ -44,10 +40,19 @@ This screencast describes setting up a workspace (GOPATH), writing commands and
 
 [[video](https://www.packtpub.com/application-development/go-projects-video)]
 
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+***
   * **Build webapps in Go without using a framework [Video]**
     * Authors: Suraj Patil
     * Publication Date: December 2016
 
 [[Course](https://www.youtube.com/playlist?list=PL41psiCma00wgiTKkAZwJiwtLTdcyEyc4)]
 
+***
+  * **Mastering Go [Video]**
+    * Authors: Mina Andrawos
+    * Publication Date: January 31, 2017
+    * ISBN:978-1786468239
+
+[[video](https://www.packtpub.com/application-development/mastering-go-programming-video)]
+
+***