Updated bower.json and readme

[alexgleason]

1. The readme asks us to use --save-dev which isn't useful since DropKick is a front-end dependency. --save is the right command.
2. The path for the main file is wrong. I updated it to the correct path.
3. The bower.json file doesn't list jQuery as a dependency. Because of that, tools which import front-end assets may include them out of order, so that DropKick is imported before jQuery. Spent some time debugging this today, see grunt-bower-concat for an example of something that uses this.
4. version in bower.json has been deprecated.
5. I added some more data from the package.json file into bower.json. Why not? It'll make DropKick more searchable.

Let me know if you have any question! Or if you disagree with any of my points. Thanks.

[Robdel12]

Very nice! Thanks for the PR :)