Change ref from ReactID to ReactInstanceHandles
Merge pull request #245 from chenglou/patch-3

Change ref from ReactID to ReactInstanceHandles
Get rid of remaining ReactID references

It's gone. Also compacted a bit of code to match the other usage.
Fix Github links in examples

Looks like we link to github.com/facebook/react/ instead of react-js. This just fixes the links

`grep -r "facebook/react.js" .` comes up clean now
Merge pull request #249 from pcottle/fixLinks

Fix Github links in examples
Fix 404 in Getting Started
Community Round-up #6
ReactChildren

Instead of changing `traverseAllChildren`, keep that around for perf
reasons (for the hot code path `flattenChildren`)

Introduce `ReactChildren.map` and `ReactChildren.forEach`
which mirrors `Array.prototype.map` and `Array.prototype.forEach`. This
involves a rename of `mapAllChildren`
Support `autocapitalize` DOM Property

It's non-standard, but potentially useful on mobile.

See some discussion in google group: https://groups.google.com/forum/#!topic/reactjs/MBcCFohHHHA

Closes #247