add haskell cast (#2846)

free-podcasts-screencasts-en.md

@@ -12,6 +12,7 @@
 * [Git](#git)
 * [Golang](#golang)
 * [Gulp](#gulp)
+* [Haskell](#haskell)
 * [Javascript](#javascript)
   * [Angular.js](#angularjs)
   * [Ember.js](#emberjs)
@@ -109,6 +110,11 @@
 * [Learning Gulp](https://www.leveluptutorials.com/tutorials/learning-gulp) (screencast)
 
 
+### Haskell
+
+* [The Haskell Cast](http://www.haskellcast.com) (podcast)
+
+
 ### Javascript
 
 * [FiveJS](https://fivejs.codeschool.com) (podcast)