fixing text index.html

Author: beneidel

public/test/index.html

@@ -7,6 +7,7 @@
   <script src="../build/test/mocha.js"></script>
   <script>window.mocha.setup('bdd');</script>
   <script src="../build/jsondiffpatch.js"></script>
+  <script src="../build/jsondiffpatch-formatters.js"></script>
   <script src="../external/diff_match_patch_uncompressed.js"></script>
   <script src="../build/test-bundle.js"></script>
   <style>