title: Import JSZip in Angular 2 project
body: <p>I am having troubles while importing the JSZip library in my Angular 2 project.
  I followed the following steps in order to change the project configuration:</p>
  
  <p>1 - Install JSZip using NPM</p>
  
  <pre><code>npm install jszip --save
  </code></pre>
  
  <p>2 - Change systemjs.config.js as follows</p>
  
  <pre><code>var map = {
      ...
      'jszip':                      'node_modules/jszip/dist/jszip.min.js'
  };
  </code></pre>
  
  <p>3 - Import the dependency within the component that requires it</p>
  
  <pre><code>import JSZip from 'jszip';
  </code></pre>
  
  <p>Then, I tried using the main JSZip constructor to attach some files, but I am getting a web error stating that the constructor is not defined. Besides, the Typescript editor I am using is not able to find the definition for it.</p>
  
  <p>Did I miss something?</p>
  
  <p>Thank you.</p>