docs: updated usage instructions for type imports

Author: aks30498

docs/Usage.md

@@ -9,7 +9,13 @@ import useToggle from 'react-use/lib/useToggle'
 or use ES6 named imports (tree shaking recommended)
 
 ```js
-import {useToggle} from 'react-use'
+import { useToggle } from 'react-use'
+```
+
+For importing types, you should use direct path-based imports
+
+```js
+import GeoLocationSensorState from 'react-use/lib/useGeolocation'
 ```
 
 Depending on your bundler you might run into a missing dependency error with ES6 named import statements. Some hooks require you to install peer dependencies so we recommend using individual imports. If you want the best of both worlds you can transform the named import statements to individual import statements with [`babel-plugin-import`](https://github.com/ant-design/babel-plugin-import) by adding the following config to your `.babelrc` file: