Issues fixes + Improvements

### Issues Fixes
- Fix missing string on optionTemplate <Robdel12/DropKick#190>
- Provides 'clone' and 'destroy' useful methods <Robdel12/DropKick#189>
- Added 'updateField' on 'refresh' methods <Robdel12/DropKick#187>
- Added possiblity to apply dropkick on detached DOM elements
<Robdel12/DropKick#100>
### Improvements
- Now you can optionally trigger the 'change' event along with the
methods 'reset' or 'refresh'
- Clicking on a selected element doesn't trigger the 'change' event
anymore (Just like the <select> element's default behaviour)