Added Headers to http.js
Update router.js
Fix bug where guardRoute cannot redirect to ''
Fixed broken links in readme.md

Quite important since links it's the documentation link.
Typo Correction on Modals Documentation

This was affecting google search results for 'durandal modal'
Docs change annomaly
Fixed DurandalRouteConfiguration.nav to be optional
Merge branch 'master' of https://github.com/mcottingham/Durandal into mcottingham-master
Fix Issue #368: Added headers to http.js plugin

-Added headers to new functions as well and updated the TypeScript
definition file.
Merge branch 'patch-1' of https://github.com/jignesh-dalal/Durandal into Version-2.1.0
Fix Issue #412 and #413: Route configured as RegExp object throwing error
Merge branch 'master' of https://github.com/adampilks/Durandal into Version-2.1.0
Fix Issue #426: Fix bug where guardRoute cannot redirect to ''
Merge branch 'patch-2' of https://github.com/abergs/Durandal into Version-2.1.0
Updated the readme
Merge branch 'master' of https://github.com/codethug/Durandal into Version-2.1.0
Fix Issue #460: Typo Correction on Modals Documentation
Minor change to the readme.
Fix Issue #480: DurandalRouteConfiguration.nav to be optional in Typescript definition
Fix Issue #449: dialog's config.messageBoxView working improperly