QRCode added

Logic added to support QRCode Generation on Service Tokens.

3rd party JS added as well holding a Free to Use MIT license;

https://github.com/davidshimjs/qrcodejs/blob/master/LICENSE

app/AvailablePlugin/CoServiceToken/View/CoServiceTokens/generate.ctp

@@ -28,6 +28,9 @@
   $params = array('title' => $title_for_layout);
   print $this->element("pageTitle", $params);
 
+  // Add QRCode Javascript
+  echo $this->Html->script('qrcode/qrcode.min.js', array('inline' => false));
+
   // Add breadcrumbs
   print $this->element("coCrumb");
   $args = array();
@@ -59,9 +62,19 @@
         <?php print _txt('pl.coservicetoken.token'); ?>
       </th>
       <td>
-        <span style="font-size:20px; font-family:courier;"><?php print filter_var($vv_token, FILTER_SANITIZE_SPECIAL_CHARS); ?></span>
+        <div id="qrcode"></div>
       </td>
     </tr>
   </tbody>
 </table>
 </div>
+<script>
+  var qrcode = new QRCode(document.getElementById("qrcode"), {
+    text: "otpauth://totp/<?php print filter_var($vv_co_service['CoService']['name'], FILTER_SANITIZE_SPECIAL_CHARS); ?>?secret=<?php print filter_var($vv_token, FILTER_SANITIZE_SPECIAL_CHARS); ?>",
+    width: 128,
+    height: 128,
+    colorDark : "#000000",
+    colorLight : "#ffffff",
+    correctLevel : QRCode.CorrectLevel.L
+  });
+</script>

app/webroot/js/qrcode/LICENSE

@@ -0,0 +1,14 @@
+The MIT License (MIT)
+---------------------
+Copyright (c) 2012 davidshimjs
+
+Permission is hereby granted, free of charge,
+to any person obtaining a copy of this software and associated documentation files (the "Software"),
+to deal in the Software without restriction,
+including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
+and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

app/webroot/js/qrcode/README.md

@@ -0,0 +1,46 @@
+# QRCode.js
+QRCode.js is javascript library for making QRCode. QRCode.js supports Cross-browser with HTML5 Canvas and table tag in DOM.
+QRCode.js has no dependencies.
+
+## Basic Usages
+```
+<div id="qrcode"></div>
+<script type="text/javascript">
+new QRCode(document.getElementById("qrcode"), "http://jindo.dev.naver.com/collie");
+</script>
+```
+
+or with some options
+
+```
+<div id="qrcode"></div>
+<script type="text/javascript">
+var qrcode = new QRCode(document.getElementById("qrcode"), {
+	text: "http://jindo.dev.naver.com/collie",
+	width: 128,
+	height: 128,
+	colorDark : "#000000",
+	colorLight : "#ffffff",
+	correctLevel : QRCode.CorrectLevel.H
+});
+</script>
+```
+
+and you can use some methods
+
+```
+qrcode.clear(); // clear the code.
+qrcode.makeCode("http://naver.com"); // make another code.
+```
+
+## Browser Compatibility
+IE6~10, Chrome, Firefox, Safari, Opera, Mobile Safari, Android, Windows Mobile, ETC.
+
+## License
+MIT License
+
+## Contact
+twitter @davidshimjs
+
+[![Bitdeli Badge](https://d2weczhvl823v0.cloudfront.net/davidshimjs/qrcodejs/trend.png)](https://bitdeli.com/free "Bitdeli Badge")
+