const {registerBlockType} = wp.blocks; //Blocks API
const {createElement} = wp.element; //React.createElement
const {__} = wp.i18n; //translation functions
registerBlockType( 'caldera-learn-basic-blocks/post-title', {
	title: __( 'Show a post title' ), // Block title.
	category:  __( 'common' ), //category
	//display the edit interface + preview
	edit(attributes,setAttributes){
		return createElement('div', {}, 'Hello from block edit callback' )
	},
	save(){
		return null;//save has to exist. This all we need
	}
});