fix: allow string list in useKeyboardJs hook

Author: streamich

docs/useKeyboardJs.md

@@ -37,5 +37,5 @@ yarn add keyboardjs
 ## Reference
 
 ```js
-useKeyboardJs(combination: string): [isPressed: boolean, event?: KeyboardEvent]
+useKeyboardJs(combination: string | string[]): [isPressed: boolean, event?: KeyboardEvent]
 ```

src/__stories__/useKeyboardJs.story.tsx

@@ -1,7 +1,7 @@
 import { text, withKnobs } from '@storybook/addon-knobs';
 import { storiesOf } from '@storybook/react';
 import * as React from 'react';
-import { useKeyboardJs } from '..';
+import useKeyboardJs from '../useKeyboardJs';
 import { CenterStory } from './util/CenterStory';
 import ShowDocs from './util/ShowDocs';
 

src/useKeyboardJs.ts

@@ -1,7 +1,7 @@
 import { useEffect, useState } from 'react';
 import useMount from './useMount';
 
-const useKeyboardJs = (combination: string) => {
+const useKeyboardJs = (combination: string | string[]) => {
   const [state, set] = useState<[boolean, null | KeyboardEvent]>([false, null]);
   const [keyboardJs, setKeyboardJs] = useState<any>(null);