Merge pull request #2473 from zertosh/docs-ssr-at-sc

Add React at SoundCloud talk
Merge pull request #2475 from jsfb/master

Use adjective "too" instead of "to"
Merge pull request #2498 from ikr/patch-1

There's no isComponentOfType() anymore
Merge pull request #2514 from jvalente/patch-1

Update ref-09-glossary.md
Merge pull request #2544 from mjul/patch-1

Update 10.4-test-utils.md
Merge pull request #2554 from samccone/patch-1

Update tutorial language to be more explicit.
Merge pull request #2555 from mfunkie/patch-1

Animation documentation for ReactTransitionGroup