updated readme and bind type

Author: tomdye

README.md

@@ -376,7 +376,7 @@ export default class AnimatedWidget extends WidgetBase {
 
 #### Passing an effects function
 
-an `effects` function can be passed to the animation and evaluated at render time. This allows you to create programatic effects such as those depending on measurements from the `Dimensions` `Meta`.
+An `effects` function can be passed to the animation and evaluated at render time. This allows you to create programatic effects such as those depending on measurements from the `Dimensions` `Meta`.
 
 ```ts
 export default class AnimatedWidget extends WidgetBase {

src/interfaces.d.ts

@@ -465,7 +465,7 @@ export interface NodeHandlerInterface extends Evented {
 export interface WidgetMetaProperties {
 	invalidate: () => void;
 	nodeHandler: NodeHandlerInterface;
-	bind: any;
+	bind: WidgetBaseInterface;
 }
 
 export interface Render {

src/meta/Base.ts

@@ -1,14 +1,14 @@
 import { Destroyable } from '@dojo/core/Destroyable';
 import Set from '@dojo/shim/Set';
-import { WidgetMetaBase, WidgetMetaProperties, NodeHandlerInterface } from '../interfaces';
+import { WidgetMetaBase, WidgetMetaProperties, NodeHandlerInterface, WidgetBaseInterface } from '../interfaces';
 
 export class Base extends Destroyable implements WidgetMetaBase {
 	private _invalidate: () => void;
 	protected nodeHandler: NodeHandlerInterface;
 
 	private _requestedNodeKeys = new Set<string | number>();
 
-	protected _bind: any;
+	protected _bind: WidgetBaseInterface;
 
 	constructor(properties: WidgetMetaProperties) {
 		super();