[dist] Update package.json and CocoaPods versions to 0.7.0-rc.2

This release includes a fix for ListViews so that they no longer produce a redbox. The versioning uses the "rc.#" style that http://semver.org/ uses.

Also went back to using tags for CocoaPods. Will create the git tag v0.7.0-rc.2 that points to this commit.

[Podspec] Update for 0.7.0-rc

[Package.json] 0.6.0

0.6.0-rc

0.5.0

Merge pull request facebook#1375 from vjeux/Updates_Fri_22_May

Updates fri 22 may

0.4.4

0.4.3

0.4.2

0.4.1