Adding exercises with unit tests

[tobiasgwaaler]

Hi,

A while ago I made some exercises for a series of workshops for teaching (elementary) Haskell. I would very much like to contribute them to this repo, if that's of interest to you?

The exercises can be found here:
https://github.com/tobiasgwaaler/hands-on-haskell
(I would revise and improve them before contributing to haskelldocumentation)

[k-bx]

@tobiasgwaaler slightly off-topic: you recommend Haskell Platform, but it's known for quickly becoming old and has high possibility of introduction of "Cabal Hell", and might scare-off new haskellers. Would you consider recommending stack instead?

[tobiasgwaaler]

@k-bx yes, that's one of the things I would revise. I'd use stack instead :)

[snoyberg]

Such an addition would be great!

[tobiasgwaaler]

@snoyberg cool, I'll make a pull request as soon as I get the chance