cielo_assets 0.0.1

This gem contains: * Flag Icons for each Supported Credit Card operator, at app/assets/images. * Basic Sass styles, for payment method selection based on radio buttons and labels whose background is a flag icon. * A Helper method, called cielo_controls. Applications should use this helper to include Cielo inputs in their forms. * A test/dummy application, that can be run with ``` rails s ``` to test this plugin * A sample view, that can be accessed at ``` http://localhost:3000/cielo_assets ```, with two basic arragement styles for Cielo controls (horizontal and vertical).