Remove classnames dependency

[levbrie]

I would love to see the classnames dependency removed. In general, it seems to me to be best practice to try to encapsulate the dependencies for a given project within the project itself and not to force package users to reproduce your development setup and to use the styling tools you've chosen. I love this package and what you've done here and think that the structure is really great, but we take great pains not to include packages and build configuration that don't actually apply to our own code - it adds confusion for new developers and it makes it far more difficult to uninstall single dependencies. Any chance you're planning to or would consider planning to get rid of this dependency?

[roylee0704]

sounds good to me!

[bguzryanto]

@roylee0704 are you working on it? I have similar problem, do think this problem because classnames, flexboxgrid does not present on 'dependecy' in package.json?

[silvenon]

Fixed with #66.