Feature Request - Ability to exclude some repositories from report

[mixua]

Thank you for an awesome and very useful project.

But I believe as the feature that let us exclude some repositories will be very useful and helps stay more informed without unnecessary attention for the repositories that we have as a demo.

Thank you!

[mattyjones]

@mixua This has been moved to the fork as this repo is no longer maintained. Please feel free to comment on mattyjones/gitrob#12