Fix: fields inside elements was not working the enter action.
Drying the markup taking off some selectors.
Extracted the logic to create the heads and the buttons navigator.
+ The finish button now must be the class 'stepy-finish' instead just 'finish'.
+ If you have a submit type button, then you don't need to set the class 'stepy-finish'.
Fixing the new name finish class style.
Updated with some examples.