Added Javascript Refactor plugin

With this plugin it is possible to select Javascript source code and extract it to a new methode aka function. The plugin will manage undeclared variable usages and pass them within a single bundled JSON parameter to the new function.
![sublime-text-javascript-refactor](https://f.cloud.github.com/assets/1270662/322195/cdf2cc14-9a30-11e2-98d7-2d72e1e3a404.png)


It als generates a sample function call at the bottom of the new methode.