Controller camelize_props: true

[ttanimichi]

This allows the use of camelize props in controller actions.

render component: 'Example', props: my_props, camelize_props: true

[BookOfGreg]

Hi @ttanimichi
👍 thanks for the fix and for going through the time to update the tests!
Interesting that the controller_renderer and the component_mount handle their args differently. I'll keep that in mind for an eventual refactor there.

For my notes:
#409
https://github.com/reactjs/react-rails/blob/master/lib/react/rails/component_mount.rb
https://github.com/reactjs/react-rails/blob/master/lib/react/rails/controller_renderer.rb