Add missing question marks
are => is
Correct spelling of "implemented"
Remove "such"

I think it's superfluous here. Alternatively, perhaps the phrasing "implemented in such a way that it regularly" would work better.
in => on
Use dot syntax for slightly simpler code
Remove "on"
A => An
2 => two
Insert "it"
Proper ellipsis
Proper ellipsis
Remove unwanted newline
Removing unprintable characters
Adding NSHipster Quiz #5 article
Clean up confusing sentence
Remove extra space
a => the
Clean up sentence
Actions are actions, not outlets :)