chore(release) prepare 1.2.0

chore(version) call it 1.1.0

Merge pull request reactjs#235 from rmosolgo/call-it-1.0

bump to 1.0

Version 0.12.2.0

Bump version for 0.12.0.0

v0.11.1.0, using React v0.11.1

I'm skipping React v0.11.0 since it included several bugs. We didn't
ship react-rails right away, so it should be find to skip.

Prepare to publish 0.10

Bump version in readme