doc : add a note about IE's compatibility view

examples/download-zip-file.html

@@ -19,7 +19,7 @@ <h2>The data URL</h2>
 </div>
 <h2>The Blob URL / saveAs</h2>
 <div>
-  Works on firefox, chrome , opera &gt;= 15 and IE &gt;= 10.<br/>
+  Works on firefox, chrome , opera &gt;= 15 and IE &gt;= 10 (but NOT in compatibility view).<br/>
   <a href="#" id="blob">click to download</a>
 </div>
 <script type="text/javascript" src="../dist/jszip.js"></script>

index.html

@@ -228,7 +228,7 @@ <h4>Other solution-ish: Blob URL / FileSaver / FileSaver.js</h4>
 myLink.href = window.URL.createObjectURL(blob);
 myLink.download = "myFile.zip";</pre>
 
-      <p>An other solution is the <a href="http://www.w3.org/TR/file-writer-api/#the-filesaver-interface">FileSaver</a> interface, created (at the time of writing) with <code>saveAs</code>. This works on Chrome and IE &gt;= 10 but not Firefox.</p>
+      <p>An other solution is the <a href="http://www.w3.org/TR/file-writer-api/#the-filesaver-interface">FileSaver</a> interface, created (at the time of writing) with <code>saveAs</code>. This works on Chrome and IE &gt;= 10 (not in compatibility view) but not Firefox.</p>
       <pre class="example">
 var blob = zip.generate({type:"blob"});
 window.saveAs(blob, "hello.zip");</pre>