@soffes: I don't think it is wrong. It is diff/patch syntax. The first `+` means "add the following line".
So this line in a diff means:

Add `+ (void)setAccessibilityType:kSecAttrAccessibleAfterFirstUnlock;`

If you look at the checkout at https://github.com/mdornseif/sskeychain/blob/df7a601e16469d8198db5078ab7abedc1697d89c/Readme.markdown the result of this diff/patch file looks correct to me.