Register to bower

[twolfson]

In a similar vein to #37, it would be useful to have this package on bower for easier installation/discoverability.

For those interested in using this package until it is registered on bower, it can be installed via the following dependency in your bower.json:

"jquery-autosave": "git://github.com/nervetattoo/jquery-autosave.git#6ac81411"

Then, the source can be loaded via:

<script src="jquery.js"></script>
<script src="bower_components/jquery-autosave/dist/jquery.autosave.min.js"></script>
<script>
  $('form').autosave; // autosave is now loaded
</script>