Create deprecatedExport utility function

[newoga]

This idea was introduced in #2476. Also related to #1793.

This function will assist us with deprecating modules with "kebab-case" names in favor of more React compatible "PascalCase" names (for example TextField.jsx instead of text-field.jsx).

It would be used like this:

/* material-ui/lib/text-field.jsx */

import TextField from './TextField'; // new location
import deprecatedExport from './utils/deprecatedExport';

export default deprecatedExport(TextField, 'material-ui/lib/text-field', 'material-ui/lib/TextField');

[oliviertassinari]

@newoga I'm ok with this 😄
@subjectix I guess that we should wait 0.14.0 before deprecating the current location of component.

[alitaheri]

@oliviertassinari Yeah this is gonna be a huge change! and must be eased into. let's just merge this for now. And wait for the right time before dropping the change :D

[newoga]

Sounds good to me! :)