Support React 15.x

[jbinto]

Frig/Frigging Bootstrap currently works okay on React 15.0.x but there are several deprecations/warnings:

valueLink deprecation

• valueLink prop on input is deprecated; set value and onChange instead
• valueLink prop on select is deprecated; set value and onChange instead
• valueLink prop on textarea is deprecated; set value and onChange instead

numeric string values for CSS properties

• a div tag (owner: FriggingBootstrap.Switch) was passed a numeric string value for CSS property marginLeft (value: 0) which will be treated as a unitless number in a future version of React.

color picker

n.b. These propTypes errors are probably unrelated to the upgrade

• Failed propType: Invalid prop startDragging of type function supplied to HueSlider, expected boolean. Check the render method of Draggable.
• Failed propType: Invalid prop startDragging of type function supplied to ColorMap, expected boolean. Check the render method of Draggable.

[jbinto]

See frig-js/frig#128 for Frig work

[jbinto]

null select example issue

• Issue: In examples, when changing something in the "null select example", there is this warning:

warning.js?8a56*:44 Warning: `value` prop on `select` should not be null.
Consider using the empty string to clear the component or `undefined` 
for uncontrolled components.

[jbinto]

For the "null select example" issue:

Tried changing this in Frig's value_linked_select.js:

-    if (el.value === '') return null
+    if (el.value === '') return ''

Now, if I select the null value "Things" (see kitchen-sink.jsx excerpt below), it won't stay selected, it snaps back to "Stuff":

            <Input
              name="select_null_value_example"
              options={[
                { label: 'Stuff', value: null },
                [null, 'Things'],
                'why not both?',
              ]}
            />

If I leave the code alone, it works (keeps "Things" selected) but React will warn.

[jbinto]

inputs switching between controlled/uncontrolled

• When typing in any input, the following warning:

Warning: FriggingBootstrap.Input is changing a uncontrolled input
of type text to be controlled. Input elements should not switch from
uncontrolled to controlled (or vice versa). Decide between using a
controlled or uncontrolled input element for the lifetime of the 
component.

edit: Fixed in frig-js/frig@4e9d132

[jbinto]

clearing/blanking input event issue

Another issue, this one needs to be seen to be believed:

• When clearing any input, (e.g. type "abc", then backspace 3 times), the input changes to "[object Object]" and a bunch of React event errors are thrown

edit: Fixed in frig-js/frig@144e746