Update README.md

README.md

@@ -2,7 +2,8 @@
 
 [![Published on webcomponents.org](https://img.shields.io/badge/webcomponents.org-published-blue.svg)](https://www.webcomponents.org/element/streetturtle/pdf-element)
 
-Web component built with Polymer which allows to view PDF files.
+Web component built with Polymer which allows to view PDF documents.  
+Note that this element doesn't use browser's built-in PDF rendered, but rednders PDF using Mozilla's [pdf.js](https://mozilla.github.io/pdf.js/) library, which let's you have more control on how the document is displayed and which actions are available to user. 
 
 Demo: http://pavelmakhov.com/pdf-element/
 
@@ -31,7 +32,7 @@ Or just clone this repo and use `pdf-element.html` in your project
 
 ## Contributing
 
-I would really appreciate any help. PR/issues and starts are welcome =)
+I would really appreciate any help. PR/issues and stars are welcome =)
 
 To run it locally make sure you have [Polymer CLI](https://www.npmjs.com/package/polymer-cli) installed and do the following:
 
@@ -42,8 +43,8 @@ bower install
 polymer serve
 ```
 
-And go to [http://localhost:8080/components/pdf-element/](http://localhost:8080/components/pdf-element/)
+Element's page will be available at [http://localhost:8080/components/pdf-element/](http://localhost:8080/components/pdf-element/)
 
 ## Licence
 
-**The MIT License (MIT)** © 2016 Pavel Makhov
+**The MIT License (MIT)** © 2016-2017 Pavel Makhov