Update readme.
Use peerDependencies for React

Directly depending on React means on a version change, users of this module will have two incompatible versions of React loaded into their browser :) Not fun.
Merge pull request #2 from KyleAMathews/patch-1

Use peerDependencies for React
Version bump.
Can now pass className to MediaObject.
Began updating to support v0.12.0
No longer using reactify for jsx transformation.
Fixing React warnings.
Now React v0.12.0 compatible. Version bumped.
Updates to Switch component plus upgrading React to v0.12.2