Add support for protocol override

[RopoMen]

Currently used protocol http/https cannot be override.

I currently pass given url to this library without doing anything and this lib is parsing videoID from url given by end-user. This causes issues when end-user is giving http url to for example YouTube video, protocol cannot be override to https and it will break https sign in browser.

I also don't like the idea of manipulating given url before giving it to this lib, so I'll make PR's from this ticket over here :)