Added component.json for use as ComponentJS component.

I'd like to use your uuid as a component via the ComponentJS mechanism.  This requires a component.json (much like a package.json) to accomplish this.

If this pull request is accepted and with your permission, I will register (an simple update to Component's wiki) as follows:

* [broofa/node-uuid](https://github.com/broofa/node-uuid) - Rigorous implementation of RFC4122 (v1 and v4) UUIDs.

For ComponentJS please see:
https://github.com/component/component
https://github.com/component/component/wiki/Components