Added support for itemscope, itemtype, itemprop.
Updated documentation.
Use camelCase and declare MUST_USE_ATTRIBUTE.
Stylistic changes.
Remove filterAttributes.js

This is no longer needed because of https://github.com/facebook/react/commit/089a494a1f0cc1892f1525fd746bac10c5a55175

mutateHTMLNodeWithMarkup.js was the only one using it.
Merge pull request #1537 from chenglou/rm-filter-attrs

Remove filterAttributes.js
Merge pull request #1491 from naturalatlas/itemscope

Added support for itemscope, itemtype, itemprop attributes.
Remove references to autoflow

Most references were removed in 6e59561; this should be the last.
Update Jasmine link
Merge pull request #1552 from t3chnoboy/master

Update Jasmine link
Tweak getting started wording
Be more specific with createClass, renderComponent

Closes #371.
Mention PropTypes in top-level API

cf. #449
Asynchronously load scripts with JSX transformer.
Merge pull request #1558 from nhunzaker/fix-1530

Fix 1530 - Asynchronously load scripts with JSX transformer