Update exclusion list

[aylapear]

• I found the exclusion list how it was written hard to find and update
• Thought this format would make it easier to add or remove repos as we need
• It also makes it easier to keep the lists as consistent across the three as well ie easier to add to all three at once then having to open three separate scripts

Fixes #35

[aylapear]

@sebdalgarno since Joe is away and I am not sure when he will look at GitHub I figured I could get you to review for now and we can merge in he doesn't chime in within a week or so. Happy to explain the changes if you need as it took me a bit to understand how the system is designed and works.

[sebdalgarno]

looks good!