Added label to InputTheme interface (react-toolbox#1501)

Author: mirandamon

components/input/Input.d.ts

@@ -42,6 +42,10 @@ export interface InputTheme {
    * Used for the HTML input element.
    */
   inputElement?: string;
+  /**
+   * Used for the label when the input has a label.
+   */
+  label?: string;
   /**
    * Used in case the input is required.
    */