Merge branch 'jquery-ui' into 'dev'.

    * Create wire/jquery/ui containing
        - a "widget" factory that accepts a node, type, and options
        - proxy overrides for get, set, and invoke methods
        - automatic generation of getters and setters
    * Create unit tests and a demo page for wijmo widgets
    * Create documentation
    * Modify wire/jquery/on and wire/lib/plugin-base/on to pass
      extra jquery-ui params to event handlers
update docs with @pieterv's feedback
See #83. Allow factories to return an instanceof WireProxy
Update to latest meld master
Merge branch 'dev' of github.com:cujojs/wire into dev
Turn off debug
Simply destroy facet
Internal renaming, preparation for better internal data structures for components and instances
Simplify plugin registry
Remove unused code
Use Object.keys().map to simplify
Minor cleanup
Provide entry point for instance processing
Prioritized proxies