Main standardize object

[ ] @TODO: standardize.window
[ ] @TODO: standardize.element
They are dependencies of standardize function
Adding window standardizer

Also created the CustomEvent polyfill
[x] @TODO: standardize.window
[ ] @TODO: standardize.document
[ ] @TODO: standardize.eventListener
[ ] @TODO: standardize.CustomEvent
Standardize attempts to standardize his child node ```document```
raising a new dependency.
EventListener should implements fallbacks for add and
removeEventListener.
CustomEvent is also too complex to maintain here, needing a brand new
exclusive document.
Adding document standardizer

Created the addEventListener/removeEventListener polyfills and
createEvent/createEventObject router

[x] @TODO: standardize.document
Merge branch 'feature-standardize-document' into feature-standardize-window
Adding eventListener standardizer

Exposes addEventListener and removeEventListener methods
[x] @TODO: standardize.eventListener
Merge branch 'feature-standardize-eventListener' into feature-standardize-window
Adding CustomEvent fallback

Implements CustomEvent constructor on elder browsers

[x] @TODO: standardize.CustomEvent
Merge branch 'feature-standardize-CustomEvent' into feature-standardize-window
Merge branch 'feature-standardize-window' into feature-standardize-main
Adding element standardizer

Implementing add/removeEventListener on elements. Verifies if
```element``` is a form element and passes it to
```standardizer.formElement```

[x] @TODO: standardize.element
[ ] @TODO: standardize.formElement

```standardize.formElement``` should contains the implementation for
[HTML5 validation API]
(http://dev.w3.org/html5/spec-preview/constraints.html#the-constraint-validation-api)
Adding formElement standardizer

Implementing HTML5 validation API

[x] @TODO: standardize.formElement
Merge branch 'feature-standardize-formElement' into feature-standardize-element
Merge branch 'feature-standardize-element' into feature-standardize-main
Merge branch 'feature-standardize-main' into polyfills
Merge branch 'polyfills' into develop