Update Bower file name

I installed BigBird with Bower and it seemed to make my project default to using `component.json` instead of the updated `bower.json`.

There was also a version mismatch, so I bumped the version and made sure that was updated everywhere.

```
callum:stream-module $ bower install bigbird
bower cloning git://github.com/madebymany/bigbird.git
bower cached git://github.com/madebymany/bigbird.git
bower fetching bigbird
bower checking out bigbird#0.2.1
bower copying /Users/madebymany/.bower/cache/bigbird/c48f80b59c84a20274e001dc66f07601
mismatch The version specified in the component.json of package bigbird mismatches the tag (0.2.1 vs 0.2.0)
mismatch You should report this problem to the package author
bower installing bigbird#0.2.1
```