update build script for new nuget
update build script for new nuget

johnkors/Thinktecture.IdentityServer.v3,IdentityServer/IdentityServer3,IdentityServer/IdentityServer3,johnkors/Thinktecture.IdentityServer.v3,roflkins/IdentityServer3,roflkins/IdentityServer3,johnkors/Thinktecture.IdentityServer.v3,roflkins/IdentityServer3,IdentityServer/IdentityServer3