ldp.get() throws with incorrect error message ("Can't create file")

[happybeing]

ldp.get() throws an error with "Can't create file ". Correct message should presuably be "Can't read file "

Here: https://github.com/solid/node-solid-server/blob/master/lib/ldp.js#L415

[melvincarvalho]

@theWebalyst good catch!

[melvincarvalho]

Thanks @ninachaubal for the PR!