add bower.json and register package to Library

Respond to https://github.com/toddmotto/apollo/issues/7, the library can now be found and downloaded via bower as **apollo.js**.

![screen shot 2014-08-20 at 2 01 04 am](https://cloud.githubusercontent.com/assets/2084193/3971390/3333b242-27d3-11e4-8ba2-da903bbc2739.png)