Include build tasks for nuget package
Exclude build folder from git
Switched to MSBuild.NuGet.Tasks for NuGet package build tasks
Added dependency on Newtonsoft.Json
Updated nuget build to include web config transform
Changed .net target framework version from 4.5 to 4.0
Updated URLs to point to github
Cached assembly information for 30 days, so we don't query it on every request.