Feature Request: Enhance Combobox take its input component as a prop

[gbenson-wikia]

Without having tested it (on account of issue #8 ), I'm pretty sure that simply removing https://github.com/hellojwilde/react-pick/blob/master/src/Combobox.js#L206 and adding "inputComponent: TypeaheadInput" into getDefaultProps(), you should be able to make Combobox more easily extensible.

In theory, this change would make it much easier for me to, for example, use the Textfield from react-mdl in place of .