Merge branch 'master' of github.com:IBM/carbon-components-angular into combobox

Author: cal-smith

src/input/input.directive.ts

@@ -15,5 +15,5 @@ import { Directive, HostBinding } from "@angular/core";
 	selector: "[ibmText]"
 })
 export class TextInput {
-	@HostBinding("class") inputClass = "bx--text-input";
+	@HostBinding("class.bx--text-input") inputClass = true;
 }

src/modal/alert-modal.interface.ts

@@ -56,12 +56,16 @@ export interface ModalButton {
 	 * Display value of the button
 	 */
 	text: string;
+	/**
+	 * Optional unique ID for the button
+	 */
+	id?: string;
 	/**
 	 * Button type
 	 */
-	type: ModalButtonType;
+	type?: ModalButtonType;
 	/**
 	 * Callback for the button `click` event
 	 */
-	click: Function;
+	click?: Function;
 }