force:showToast and force:closeQuickAction events

	<!--quickAdd.cmp-->
	<aura:component implements="force:lightningQuickAction" >
	<lightning:input type="number" name="myNumber" aura:id="num1" label="Number 1"/>
	<lightning:input type="number" name="myNumber" aura:id="num2" label="Number 2"/>
	<br/>
	<lightning:button label="Add" onclick="{!c.clickAdd}"/>
	</aura:component>

view raw quickAdd.cmp hosted with ❤ by GitHub

	/*quickAddController.js*/
	({
	clickAdd: function(component, event, helper) {
	// Get the values from the form
	var n1 = component.find("num1").get("v.value");
	var n2 = component.find("num2").get("v.value");
	// Display the total in a "toast" status message
	var resultsToast = $A.get("e.force:showToast");
	resultsToast.setParams({
	"title": "Quick Add: " + n1 + " + " + n2,
	"message": "The total is: " + (n1 + n2) + "."
	});
	resultsToast.fire();
	// Close the action panel
	var dismissActionPanel = $A.get("e.force:closeQuickAction");
	dismissActionPanel.fire();
	}
	})

view raw quickAddController.js hosted with ❤ by GitHub

One more example: https://developer.salesforce.com/docs/atlas.en-us.lightning.meta/lightning/components_using_lex_s1_config_action_recordid.htm