Merge pull request #62 from Gitoffthelawn/patch-1

Add testing utility link and SEO term to README.md

README.md

 Decentraleyes
 =============
 
-A [Firefox add-on](https://addons.mozilla.org/firefox/addon/decentraleyes) that emulates Content Delivery Networks locally by intercepting requests, finding the required resource and injecting it into the environment. This all happens instantaneously, automatically, and no prior configuration is required.
+A [Firefox add-on](https://addons.mozilla.org/firefox/addon/decentraleyes) that emulates Content Delivery Networks (CDN's) locally by intercepting requests, finding the required resource and injecting it into the environment. This all happens instantaneously, automatically, and no prior configuration is required.  The extension can easily be tested by visiting: https://decentraleyes.org/test
 
 > **Note:** Decentraleyes is no silver bullet, but it does prevent a lot of websites from making you send these kinds of requests. Ultimately, you can make Decentraleyes block requests for any missing CDN resources, too.