v1.0.0-beta5

So this release basically bundles three PRs:

1. #185:
   When using history basename function it returns an object. Before this
   it would only accept a function that returns an object. This update
   gives users the ability to use other helpers provided by history.
   Also take a look at the added test , it explains pretty well what´s possible now.
2. #183:
   This fixes the infinite redirect loop in IE8&9 and also addresses some issues with router actions firing twice on the first load. We now got a INIT_ROUTES action for the initial load.
3. #178:
   This allows you to switch out the default RoutingContext e.g. for RelayRoutingContext.

Thanks again @apapirovski, @vslinko and @agirton-twitter for your contributions!

Also we added history as a dependency. Tried it as a peerDependency but this seems to cause problems with older npm versions.

Also we want to bring #172 to your attention (again). We badly need contributions for redux-router, feel free to send us PRs or take part in the discussions on the issue trackers, if many people put in a little bit of effort it´ll be just as good as one full time contributor.