Update React Router to 2.0.0 and refactor to respect API changes
Update React Router to 2.0.0 and refactor to respect API changes

Usage of replaceState in onEnter functions needed to be swapped for replace as it is now depracted

tidepool-org/blip,tidepool-org/blip,hichameyessou/blip,hichameyessou/blip,tidepool-org/blip,hichameyessou/blip