Add router import to clarify where static methods are found in 0.2
[fixed] checks for class instead of components

Previously the checks for components were the same as class. This changes in the new version of react. See this issue: https://github.com/facebook/react/issues/1164
Merge pull request #68 from jaketrent/master

Add router import to clarify where static methods are found in 0.2
Merge pull request #81 from VictorSigma/react-0.11.0-rc1

[fixed] checks for class instead of components
release v0.2.1
[changed] Combine URL helpers into URL module
[changed] Preserve forward slashes in URL params

This is helpful when using * to match fs-like paths.
[added] ActiveState mixin

Components can mixin Router.ActiveState to receive notifications when
the active routes, params, and query change.

Fixes #85
Move method definitions
Fix failing specs
[changed] activeRoute can render with props and children.
indicate the default for `location`
Merge pull request #91 from ryankshaw/patch-1

indicate the default for `location`
Merge pull request #90 from benjohnson/active-route

[changed] activeRoute can render with props and children.
[changed] activeRoute is a function that returns null when no child routes are active.