Skip CI commit message

#1

I sometime use multiple CIs to cover different platforms (Travis CI for Mac and AppVeyor for Windows). Occasionally, I want to make a change that only affects one of the platforms and want to skip tests on the others. While Circle CI provides this feature in commit form (what I want), it unfortunately uses a vague syntax (skip ci or ci skip). It would be nice if I could add something for Circle CI specifically. For instance, circle skip or circle ci skip or similar. Would this be possible?

Adding `[circle skip]` to commit message to skip
#2

Thanks for the request! There is already an existing feature request for this here [ci skip] is great, but it is backwards

#3