Add example of mocking using with-redefs

[anderseknert]

Resolves #51

Signed-off-by: Anders Eknert anders@eknert.com

[lread]

Oh thanks! I thought you were still somehow using clj-http-fake with redefs and was curious to learn what magic you had come up with. Lee's law: if I can misunderstand I will misunderstand.

This makes more sense! Thanks for the PR!

[anderseknert]

Hah! Yeah, no I gave that up rather quickly. While I had used with-redefs some time in the past, it wasn't the first thing I reached for, and hence how I ended up finding that fake library. Given how with-redefs solved the problem so well, I'm honestly not sure why you'd even need that in the first place. Oh well, good to have some examples in the docs either way :)

[lread]

Yup! Thanks again for your contribution!