The "rapture" is not a Biblical teaching.
The orgins of such a doctrine can be traced to two priests engaged in a counter measure against the Christian reformation. Some use this word to refer to the Biblical second coming. No such word or reference is given in Scripture.
I didnt bother to read that whole link to see which version theyre refering to however in general the word is usually used in reference to a secret appearing of Christ OR "saints" being secreted out of the world. There is no such teaching in The Bible.