Renaming the nupkg file to a generic name and changing version to 1.1.5

Hi Martin,

I have changed the version to 1.1.5, to follow the current version.
Also, I have already uploaded the new package to the NuGet website. It can be downloaded already: https://www.nuget.org/packages/libTUIO11/

It is amazing that it has already been downloaded 25 times hehehe