adds bower.json, fixes #3

I'm with @faviouz that your repo should be on bower, so I created a sample `bower.json` for you. If you want to do it yourself, just install [bower](http://bower.io), and then type

```
bower init
```
in your local typecsset folder. You will see some prompts, which will fill out same `bower.json` ;-)

Once we have that file in the repo, we just have to register it with the package manager, like so:

```
bower register typecsset https://github.com/csswizardry/typecsset

Wishes,
Stefan