docs: add links to demos

README.md

@@ -33,12 +33,12 @@
 
 - [**Sensors**](./docs/Sensors.md)
   - [`useBattery`](./docs/useBattery.md) — tracks device battery state. [![][img-demo]](https://codesandbox.io/s/qlvn662zww)
-  - [`useGeolocation`](./docs/useGeolocation.md) — tracks geo location state of user's device.
+  - [`useGeolocation`](./docs/useGeolocation.md) — tracks geo location state of user's device. [![][img-demo]](https://streamich.github.io/react-use/?path=/story/sensors-usegeolocation--demo)
   - [`useHover` and `useHoverDirty`](./docs/useHover.md) — tracks mouse hover state of some element. [![][img-demo]](https://codesandbox.io/s/zpn583rvx)
   - [`useIdle`](./docs/useIdle.md) — tracks whether user is being inactive.
   - [`useKeyPress`](./docs/useKeyPress.md) — tracks whether a keyboard key—or set of keys—was pressed.
   - [`useLocation`](./docs/useLocation.md) — tracks page navigation bar location state.
-  - [`useMedia`](./docs/useMedia.md) — tracks state of a CSS media query.
+  - [`useMedia`](./docs/useMedia.md) — tracks state of a CSS media query. [![][img-demo]](https://streamich.github.io/react-use/?path=/story/sensors-usemedia--demo)
   - [`useMediaDevices`](./docs/useMediaDevices.md) — tracks state of connected hardware devices.
   - [`useMotion`](./docs/useMotion.md) — tracks state of device's motion sensor.
   - [`useNetwork`](./docs/useNetwork.md) — tracks state of user's internet connection.
@@ -51,7 +51,7 @@
   - [`useAudio`](./docs/useAudio.md) — plays audio and exposes its controls. [![][img-demo]](https://codesandbox.io/s/2o4lo6rqy)
   - [`useOutsideClick`](./docs/useOutsideClick.md) — triggers callback when user clicks outside target area.
   - [`useSpeech`](./docs/useSpeech.md) — synthesizes speech from a text string. [![][img-demo]](https://codesandbox.io/s/n090mqz69m)
-  - [`useVideo`](./docs/useVideo.md) — plays video, tracks its state, and exposes playback controls.
+  - [`useVideo`](./docs/useVideo.md) — plays video, tracks its state, and exposes playback controls. [![][img-demo]](https://streamich.github.io/react-use/?path=/story/ui-usevideo--demo)
   - [`useWait`](./docs/useWait.md) — complex waiting management for UIs.
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