My first Chrome Extension

I would like to share with you my first chrome extension. The idea is simple: help users improve productivity by allowing them to select text from a web page and apply a URL on the selected text. For example, translate a word by selecting it and apply the following URL: https://translate.google.com/?sl=en&tl=ar&text=[VAL1]&op=translate
[VAL1] is a place holder, the extension will replace it with the selected text and launch a new tab with the modified URL. This extension also allows more than one place holders. Examples in the Chrome extensions store link:
https://chrome.google.com/webstore/detail/selact/dhjmekhbbnemhcpgfonhojhonidobcna

It would be great to get some feedback!