Added NuGet package and fixed some typos

Adding a NuGet package that brings the jQuery and AngularJS bits with it.  
Note: Since Angular itself doesn't publish a NuGet package, the dependency added is one that John Papa manages and folks use.  There is another that brings in ALL of Angular and this one just brings in the "core" aspects of it.  Initial commit of nuspec file here also notes it as a "pre-release" because it depends on packages that are pre-release as well and that's how NuGet works.