3.1.2

    * using classList for class atributte manipulation
    * template method now returns a clone
    * using forEach on Array like objects to prevent breaking in IE8
    * fixed class called as a method (IE8 reserve word)
    * removed polyfills from example and lib and suggest only waht to polyfill
    * improved the Tree example
    * template manipulations is good enougth
    * clone logic is absolete... for now