React 0.14.7: `<option value="">empty</option>` emits empty string on change
http://jsbin.com/pisita/10/edit?html,js,console,output
React 15.0.0-rc.1`<option value="">empty</option>` emits string with value "empty" on change
http://jsbin.com/bemaze/12/edit?html,js,console,output
This is because React 15.0.0-rc.1 cuts off `value=""` from option tag

type: 0,
    useMap: 0,
    value: MUST_USE_PROPERTY | HAS_SIDE_EFFECTS,
    width: 0,
    wmode: 0,
    wrap: 0,
    /**
     * RDFa Properties
     */
    about: 0,
    datatype: 0,
    inlist: 0,
    prefix: 0,
    
    property: 0,
    resource: 0,
    typeof: 0,
    vocab: 0,
    /**
     * Non-standard Properties
     */
    
    
    autoCapitalize: 0,
    autoCorrect: 0,
    
    autoSave: 0,
    
    color: 0,