Added Skid tool to Configuration section

[Meyhem]

Skid is configuration templating utility fit for large projects with many configs across places. With one command you can reconfigure your app to specific environments.
I would like to add it to the list because in the past I was searching for similar utility and had no luck finding it, so I've written one myself.

✓ Generally useful to the community
✓ Actively maintained (even if that just means acknowledging open issues when they arise)
✓ Stable
✓ Documented
✓ Tests

[Neftedollar]

@Meyhem awesome! Thnx!