Accept Git URLs that don't end in .git

[philpax]

The DIP17 spec allows for anything that can be git cloned; GitHub will serve up the repo to a Git client even if you don't end in .git. I think we can remove the check and it should Just Work:tm:

[wolfcomp]

Be warned that this would also need to modify the code added with #26 as it expects the URL to have .git currently with [..^4] on the AbsolutePath of the URL that is sent.

Note: Internally in C# this is called URI as it can be anything that follows <method>://<path>