Added JavaScripting

Added JavaScripting
Learn JavaScript by adventuring around in the terminal.
https://github.com/sethvincent/javascripting

free-programming-interactive-tutorials-en.md

@@ -98,6 +98,7 @@
 * [Javascript Foundations](http://gymnasium.aquent.com/catalog/course/104)
 * [Javascript interactive tutorial on CodeCademy](http://www.codecademy.com/tracks/javascript)
 * [Javascript interactive tutorial on CoderMania](http://www.codermania.com/javascript/lesson/1a/hello-world)
+* [Javascripting](https://github.com/sethvincent/javascripting)
 * [jQuery Building Blocks](http://gymnasium.aquent.com/catalog/course/102)
 * [Learning Advanced JavaScript](http://ejohn.org/apps/learn/)
 * [Learn JavaScript](http://www.learn-js.org/)