Merge pull request #894 from rudylee/patch-1

Add Vim Adventures to free-programming-interactive

free-programming-interactive-tutorials-en.md

@@ -109,3 +109,4 @@
 
 ###Vim
 * [Interactive Vim Tutorial](http://www.openvim.com/tutorial.html)
+* [Vim Adventures](http://vim-adventures.com/)