Bower compatibility

Although this library is available through the Bower components directory, it is not compatible with [the Bower guidelines for registering a package](https://github.com/bower/bower#registering-packages). This is mainly useful for tools like [Rails Assets](http://rails-assets.org) to work properly.

To make this library Bower compatible, two changes are required:

1. Create a `bower.json` manifest file with information about the project. This file is included in this Pull Request.
2. Create a new Github release for every new version of the library and use a semversion for the tag name. Bower uses tags to determine the version of a library.

If these guidelines are followed, usage of the library in other projects becomes easier. Thanks!