Change build script to only build one .zip file for NPE codeplex site.
Change build script to only build one .zip file for NPE codeplex site.

BreeeZe/NuGetPackageExplorer,campersau/NuGetPackageExplorer,NuGetPackageExplorer/NuGetPackageExplorer,NuGetPackageExplorer/NuGetPackageExplorer,dsplaisted/NuGetPackageExplorer