Update travis-ci badge for 0.12-stable branch
Fix typo in 0.12 RC blog post
Hide ReactElement constructor

This prevents feature tests like:

var ReactElement = React.createElement(...).constructor;

if (element.constructor === ReactElement)

This is intentional so that we have the option to make these plain objects.
E.g. for direct inlining or replacing them with value types.
Merge pull request #2405 from sebmarkbage/hideelementconstructor

Hide ReactElement constructor
Update properties/elements
React.renderComponent -> React.render

This covers most everything. The perf suite still needs work for the
Element updates. And the server rendering example needs to be done
wholesale.
Update server servering example

It's referencing packages that aren't published yet but it *probably*
works...
Remove @jsx from examples
[docs] Glossary

Pulled in https://gist.github.com/sebmarkbage/fcb1b6ab493b0c77d589
mostly verbatim
Use --harmomy in docs examples for cleaner code
Update React.DOM -> React.createElement through docs
Update Animation docs for createElement
Updated Docs for new JSX Changes

Moved non-JSX explanation to Displaying Data.
Overhauled JSX in Depth.
Added JSX Spread Section.
Replace transferPropsTo with transferring props patterns
More Descriptor -> Element renames
Update Docs Navigation
Merge pull request #2413 from LeonFedotov/patch-1

Changing api documentation for jsx transformer
Merge pull request #2414 from benleiken/patch-1

Moved key requirement note into 'getting started'
React.js Conf blog post

Closes #2412
Update Authors & Acknowledgements for 0.12