Move React to peerDependencies

Fix ReactKinectic using its own copy of React and
its component descriptors not being recognized.
Simplify example code

- Use `react-kinetic` npm package instead of relative import.
- Use plain numbers instead of strings.
- Render to body.
Add keywords

- Add keywords to help people find the package from npm.
- Add to http://react-components.com/ using `react-component` keyword.
Merge pull request #8 from fson/react-peer-dependencies

Move React to peerDependencies
Merge pull request #9 from fson/fix-example

Simplify example code
Merge pull request #10 from fson/package-keywords

Add keywords
Added smoke-test with more shapes (text shapes currently do not work)