Queue item: check if it is a valid method (skip private ones).
Add test for private methods support in queue hash.
sorted grammatical error

Changed `This Generator is empty. Add at least one method for it to be runned.` to `This Generator is empty. Add at least one method for it to run.`; the wording was annoying me.
Merge pull request #581 from ahmednuaman/patch-1

sorted grammatical error
Update deprecated jscs rules.
Merge pull request #580 from gillesfabio/queue-hash-private-methods-support

Queue hash private methods support