updates with info on dependencies and requirements

Author: sayanee

readme.md

@@ -1,9 +1,9 @@
-# angular-pdf ![Build Status](https://travis-ci.org/sayanee/angularjs-pdf.png)
+# angular-pdf [![Build Status](https://travis-ci.org/sayanee/angularjs-pdf.png)](https://travis-ci.org/sayanee/angularjs-pdf) [![Dependency Status](https://gemnasium.com/sayanee/angularjs-pdf.png)](https://gemnasium.com/sayanee/angularjs-pdf)
 
 
 >An [AngularJS](http://angularjs.org/) [directive](http://docs.angularjs.org/guide/directive) `ng-pdf` to display PDF files with [PDFJS](http://mozilla.github.io/pdf.js/).
 
-## Overview
+## Overview [[demo](http://sayan.ee/angularjs-pdf/)]
 
 Integrate PDF files right into web pages.
 
@@ -19,6 +19,11 @@ Integrate PDF files right into web pages.
 1. define the view template
 1. define the path to pdf with scope variable
 
+##Requirements
+
+1. [AngularJS](http://angularjs.org/) - get the latest [angular.min.js](https://developers.google.com/speed/libraries/devguide#angularjs)
+1. [PDFJS](http://mozilla.github.io/pdf.js/) - build the files [`pdf.js` and `pdf.worker.js`](https://github.com/mozilla/pdf.js#building-pdfjs)
+
 ## Getting Started
 
 1. install or copy over the file `dist/angular-pdf.min.js` or `dist/angular-pdf.js`
@@ -109,11 +114,6 @@ Integrate PDF files right into web pages.
 1. open the file `index.html` with a web server
 
 
-##Requirements
-
-1. [AngularJS](http://angularjs.org/)
-1. [PDFJS](http://mozilla.github.io/pdf.js/).
-
 ##Similar projects
 
 1. [ng-pdfviewer](https://github.com/akrennmair/ng-pdfviewer)