Adding  nav model capability and cleaning up the API of the router.
Adding  nav model capability and cleaning up the API of the router.

davismj/Durandal,mryellow/Durandal,mryellow/Durandal,Craga89/Durandal,davismj/Durandal,Craga89/Durandal,rwhepburn/Durandal,BlueSpire/Durandal,davismj/Durandal,mryellow/Durandal,davismj/Durandal,rwhepburn/Durandal,Craga89/Durandal,rwhepburn/Durandal,BlueSpire/Durandal,BlueSpire/Durandal,mryellow/Durandal,rwhepburn/Durandal,BlueSpire/Durandal,Craga89/Durandal