Adding nuspec file for NuGet package with PS scripts that add a post-build event on target project.

Removed unnecessary links to dlls, Added FFTW for x64 platforms.
Making FFTW OS version aware x64, x86
Adding Build.proj for in order to build the application from command line. Invoke build.cmd All|Compile|Package Release|Debug in order to generate compiled libs or packages
Merge branch 'master' of github.com:AddictedCS/soundfingerprinting