Add a randomNumber function

[lukyth]

I'd like to add a function which receives min and max number and returns a random number between them.

Is it okay if I'll work on that to practice on contributing to OSS?

[kentcdodds]

Perfect! What stack overflow answer are you thinking about basing your implementation on? :-)

[lukyth]

@kentcdodds I think it's gonna be this one. What do you think?

[kentcdodds]

👍