Emphasis on single child.
Merge pull request #173 from chenglou/patch-4

Emphasis on single child.
add datetime to the list of known attributes

as per http://www.whatwg.org/specs/web-apps/current-work/multipage/text-level-semantics.html#attr-time-datetime
dateTime attr: camelCase and MUST_USE_ATTRIBUTE
Merge pull request #176 from andreypopp/master

Add datetime to the list of known DOM attributes
Call require("mock-modules").register in every mockable module.
Explicitly mock ReactDefaultInjection in failing tests.
Enable module.exports mocking in react-test.js.

We don't currently attempt to mock modules automatically, but we do
respect require("mock-modules").mock, .dontMock, and .dumpCache.

I'm going to keep investigating auto-mocking, since that would move us
much closer to the behavior used within Facebook.

Closes #154.
Closes #155.