fix(addMT): fix bug when callback wasnt called

Before addMT was only accepting jQuery array, started Hammer for each
element and added jQuery array to MTObjects array.
Currently addMT accepts HTMLCollection or jQuery array, starts Hammer on
each element and adds instance of Hammer to MTObjects array.

Breaks: Cannot pass to addMT result of getElementById function
feat(addMT): allow add HTML Elements

Result of getElementById function can be passed as parameter to addMT
function