[Bug] Repository name with periods

[nsporillo]

I followed the steps to generate a deploy key and I set up the lambda exactly as prescribed, however I kept getting this USERAUTH Fail: https://gist.github.com/nsporillo/fbbcba61f36809ccf6fefc83560c424b

On a hunch, I updated my repository name to porillo-net. Suddenly everything works.

I suggest adding a note to the readme regarding repository naming, as I'm not sure it's necessarily a problem with github-bucket's code.

That aside, this is exactly what I was looking for. Great work!