Add NSThread bindings

[iddm]

Hi! Could you please add NSThread bindings (shouldn't be very hard). Or is there a guide explaining adding new bindings? Thanks.

[jdm]

A guide would be useful, but all we have right now is various historical PRs to use as a model.

[iddm]

If there are many PRs not merged, shall I work on one (if it's not going to be merged)? :)

[jdm]

If you look at this recent commit history, you will also see lots of PRs that are merged.

[iddm]

If you look at this recent commit history, you will also see lots of PRs that are merged.

Oh, yes, sorry, my fault :)