Merge pull request #2630 from shamrin/patch-1

fix typo in addons.update() $splice command help
Merge pull request #2633 from koba04/fix-addons-document

Fix addons documentation of development only part
Merge pull request #2616 from christianalfoni/patch-3

Adding link to wiki
Merge pull request #2623 from jbhatab/patch-1

Screencast interfacing react + backbone
Merge pull request #2622 from rafd/patch-1

add note re: handling events in capture phase
Merge pull request #2636 from zpao/docs/spread-assign-update

[docs] Remove generic spread, Object.assign  mentions
Merge pull request #2615 from af/createElement-docs

Add top-level API docs section for React.createElement.
Merge pull request #2649 from cookfront/master

In `Transferring Props` guide, `Manual Transfer` section will lead an er...
Merge pull request #2639 from zpao/own-jsfiddle

Own our fiddles so we can update them more easily
Merge pull request #2635 from zpao/docs/props-state-clarification

[docs] Clarify when state may duplicate props