There is now a special addon for Firefox, that lets you install extensions from Chrome Web Store to Firefox, without the need for any special scripts.
This extension was developed specifically to combat the increasing popularity of Google Chrome among the web surfing community, which has led to the decline in Firefox market share.
Not to mention that Chrome Extensions are now considered better for web browsing, since they offer a large variety of functions to the users.
If you want to use this addon on your Firefox browser, follow these simple steps.
With these simple steps, you will be able to install and run Chrome Web Store applications on Firefox browser. Have fun.