Move build-time npm packages to devDependencies
Move build-time npm packages to devDependencies

The only run-time packages that the src/index.js file uses is 'react'
and 'lodash.debounce'. Everything else can be installed as a
devDependency.

This helps reduce the cruft for users that want to `npm shrinkwrap`.

seethroughtrees/react-ux-password-field,seethroughtrees/react-ux-password-field