Merge pull request #28 from syllog1sm/master

ProgressBar implementation and test
Add ProgressBar to AMD export
Fix `SplitButton`
As React components must return a single component there's no way to compose
`DropdownButton` within `SplitButton` as the styling breaks
Bump version and add badges
Add basic `PanelGroup`
Upgrade to React 0.9.0-rc1 and fix warnings in tests
Update React version in readme
Upgrade React to 0.9.0
Add basic `Modal`
Add `OverlayTrigger` and refactor `LayeredComponentMixin` to `OverlayTriggerMixin`
Fix fading in Firefox
Merge pull request #30 from stevoland/feature/modal

Implement basic `Modal`, `OverlayTrigger` and `OverlayTriggerMixin`
Fix don't close dropdowns when eg. menu header is clicked
Refine `Modal` API to match Bootstrap
Adds `aniamtion`, `delay`, `delayShow`, `delayHide` props
Required update local copy of `cloneWithProps`
Update readme
Initial docs website

Website uses a mixture of React and bootstrap website assets.
Run `grunt build:docs` to generate files
Merge pull request #11 from pieterv/docs-rfc

Docs example [RFC]
Refactor `ProgressBar`
Outputs .progress wrapper if not a child of another `ProgressBar`
Add `striped` and `active` variations
Change `props.text` interpolation to take `%(key)s` for keys:
  min, max, now, percent and bsStyle
No screenreader text by default
Remove  path from readme examples
Add `ProgressBar` example to readme