Wrong resolution of home directory

Using `~` to reference the home directory leads to a wrongly resolved file path when calling `nuget-inspector`.

I call `ni` using this command:

```sh
nuget-inspector --project-file=~/dev/MyProject/MySolution.sln
```

which leads to this error:

```sh
ERROR: scan failed: System.IO.DirectoryNotFoundException: Could not find a part of the path
'/home/myuser/~/dev/MyProject/MySolution.sln
```

Obviously the current directory is simply prepended to the given path but `~` is ignored although resolving it would give an absolute path already.

Best regards.