Cryptocurrency Price Tracker: Simple cryptocurrency price tracker.

Hi, I created this simple extension to help me to track cryptocurrencies that I am interested for. As you can see this extension is very simple. On options page you can choose which coins you would like to track and in which currency you would like to see value for that coins and total market cap. After you made some changes on options page it will take 5 minutes for that changes to appear in popup window. That is done because I wanted to limited number of requests as it was suggested from coinmarketcap.com API. So, results are updated after 5 minutes for a popup window and 10 minutes for options page. Of course it will update only if you go to option page or click on extension icon to see coins that you have selected. Hope it will be useful to someone. This extension use coinmarketcap.com API.