title: .net core with typescript typings install issues
body: <p>I've just downloaded VS2015 community edition and I'm playing with migrating one of my old MVC projects to .NET Core MVC. It's kind of going ok but I wrote all the client side code in TypeScript for my old project which is now proving to be a pain in the butt to setup (imho). I've managed to get my TypeScript files working now after configuring all these new JSON config files that are driving everything, however I've now just added back a number of 'definitleytyped' packages (which seem to be nowhere obvious in the project) but my TypeScript is erroring as it can't recognise '$' for jQuery??</p>
  
  <p>I've searched google and found that I now should be using 'typings' instead but for the life of me I'm just not getting anywhere. Everyone says run 'NPM install typings --global' but whether I used PowerShell or cmd or the VS dev command line 'npm' is unrecognised??</p>
  
  <p>Help please!</p>