fix nuget link for case sensitive drives - *nix
fix nuget link for case sensitive drives - *nix

den-mentiei/omnisharp-vim,anurse/omnisharp-vim,OmniSharp/omnisharp-vim,OmniSharp/omnisharp-vim,nosami/omnisharp-vim,AndBicScadMedia/omnisharp-vim,OmniSharp/omnisharp-vim