Upgrade from Angular 2 beta 2.0.0 to Angular 2.0.0-rc.1

[Ronaki]

I want to upgrade my project built on Angular 2 beta to Angular 2 rc. Any suggestions/links that I should follow would be appreciated. I have although made changes in package.json and did npm install too, also changed angular2/core to @angular/core. But it doesn't seem to work and using @angular/core still shows a red line.